1422320731 has 6 divisors (see below), whose sum is σ = 1540146300. Its totient is φ = 1312911288.

The previous prime is 1422320723. The next prime is 1422320743. The reversal of 1422320731 is 1370232241.

It is a happy number.

It is not a de Polignac number, because 1422320731 - 2³ = 1422320723 is a prime.

It is a super-2 number, since 2×1422320731² = 4045992523664748722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1422320696 and 1422320705.

It is not an unprimeable number, because it can be changed into a prime (1422320701) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4207881 + ... + 4208218.

It is an arithmetic number, because the mean of its divisors is an integer number (256691050).

Almost surely, 2^1422320731 is an apocalyptic number.

1422320731 is a deficient number, since it is larger than the sum of its proper divisors (117825569).

1422320731 is an equidigital number, since it uses as much as digits as its factorization.

1422320731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8416125 (or 8416112 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 1422320731 is about 37713.6676948822. The cubic root of 1422320731 is about 1124.6028506949.

Adding to 1422320731 its reverse (1370232241), we get a palindrome (2792552972).

The spelling of 1422320731 in words is "one billion, four hundred twenty-two million, three hundred twenty thousand, seven hundred thirty-one".