31004356634 has 16 divisors (see below), whose sum is σ = 48156874920. Its totient is φ = 14953102080.

The previous prime is 31004356627. The next prime is 31004356639. The reversal of 31004356634 is 43665340013.

It can be written as a sum of positive squares in 4 ways, for example, as 30977056009 + 27300625 = 176003^2 + 5225^2 .

It is a super-2 number, since 2×31004356634² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31004356594 and 31004356603.

It is not an unprimeable number, because it can be changed into a prime (31004356639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198827 + ... + 318654.

Almost surely, 2^31004356634 is an apocalyptic number.

31004356634 is a deficient number, since it is larger than the sum of its proper divisors (17152518286).

31004356634 is a wasteful number, since it uses less digits than its factorization.

31004356634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518545.

The product of its (nonzero) digits is 77760, while the sum is 35.

Adding to 31004356634 its reverse (43665340013), we get a palindrome (74669696647).

The spelling of 31004356634 in words is "thirty-one billion, four million, three hundred fifty-six thousand, six hundred thirty-four".