1345244031 has 10 divisors (see below), whose sum is σ = 2009562192. Its totient is φ = 896829300.

The previous prime is 1345244027. The next prime is 1345244057. The reversal of 1345244031 is 1304425431.

It is a happy number.

1345244031 is a `hidden beast` number, since 134 + 524 + 4 + 0 + 3 + 1 = 666.

It is not a de Polignac number, because 1345244031 - 2² = 1345244027 is a prime.

It is a super-2 number, since 2×1345244031² = 3619363005882257922, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 1345243986 and 1345244004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345244081) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8303895 + ... + 8304056.

Almost surely, 2^1345244031 is an apocalyptic number.

1345244031 is a deficient number, since it is larger than the sum of its proper divisors (664318161).

1345244031 is an equidigital number, since it uses as much as digits as its factorization.

1345244031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16607963 (or 16607954 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 1345244031 is about 36677.5684990159. The cubic root of 1345244031 is about 1103.9100603125.

Adding to 1345244031 its reverse (1304425431), we get a palindrome (2649669462).

The spelling of 1345244031 in words is "one billion, three hundred forty-five million, two hundred forty-four thousand, thirty-one".