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1422031031 = 1955372727
BaseRepresentation
bin101010011000010…
…0111100010110111
310200002210122211222
41110300213202313
510403014443111
6353035020555
750145031031
oct12460474267
93602718758
101422031031
1166a776a63
1233829a75b
131987c34a5
14d6c08c51
1584c977db
hex54c278b7

1422031031 has 4 divisors (see below), whose sum is σ = 1422123312. Its totient is φ = 1421938752.

The previous prime is 1422031019. The next prime is 1422031033. The reversal of 1422031031 is 1301302241.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1301302241 = 8211585021.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1422031031 is a prime.

It is a super-2 number, since 2×14220310312 = 4044344506253845922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1422031033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16811 + ... + 55916.

It is an arithmetic number, because the mean of its divisors is an integer number (355530828).

Almost surely, 21422031031 is an apocalyptic number.

1422031031 is a deficient number, since it is larger than the sum of its proper divisors (92281).

1422031031 is an equidigital number, since it uses as much as digits as its factorization.

1422031031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92280.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1422031031 is about 37709.8267166530. The cubic root of 1422031031 is about 1124.5264920225.

Adding to 1422031031 its reverse (1301302241), we get a palindrome (2723333272).

The spelling of 1422031031 in words is "one billion, four hundred twenty-two million, thirty-one thousand, thirty-one".

Divisors: 1 19553 72727 1422031031