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1422331731 = 355853217
BaseRepresentation
bin101010011000111…
…0000111101010011
310200010100221100000
41110301300331103
510403104103411
6353045301043
750150422512
oct12461607523
93603327300
101422331731
1166a961977
12338404783
1319889a312
14d6c86679
1584d06956
hex54c70f53

1422331731 has 12 divisors (see below), whose sum is σ = 2130571352. Its totient is φ = 948220992.

The previous prime is 1422331723. The next prime is 1422331747. The reversal of 1422331731 is 1371332241.

It is a happy number.

It is not a de Polignac number, because 1422331731 - 23 = 1422331723 is a prime.

It is a super-2 number, since 2×14223317312 = 4046055106018912722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1422331695 and 1422331704.

It is not an unprimeable number, because it can be changed into a prime (1422331931) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2926366 + ... + 2926851.

It is a self-describing number.

Almost surely, 21422331731 is an apocalyptic number.

1422331731 is a deficient number, since it is larger than the sum of its proper divisors (708239621).

1422331731 is an frugal number, since it uses more digits than its factorization.

1422331731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5853232 (or 5853220 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 1422331731 is about 37713.8135303233. The cubic root of 1422331731 is about 1124.6057498533.

Adding to 1422331731 its reverse (1371332241), we get a palindrome (2793663972).

It can be divided in two parts, 14223 and 31731, that added together give a palindrome (45954).

The spelling of 1422331731 in words is "one billion, four hundred twenty-two million, three hundred thirty-one thousand, seven hundred thirty-one".

Divisors: 1 3 9 27 81 243 5853217 17559651 52678953 158036859 474110577 1422331731