31829404064 has 24 divisors (see below), whose sum is σ = 62776677348. Its totient is φ = 15886120960.

The previous prime is 31829404051. The next prime is 31829404069. The reversal of 31829404064 is 46040492813.

It can be written as a sum of positive squares in 2 ways, for example, as 29891643664 + 1937760400 = 172892^2 + 44020^2 .

It is a super-2 number, since 2×31829404064² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31829404069) 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, 875057 + ... + 910704.

Almost surely, 2^31829404064 is an apocalyptic number.

It is an amenable number.

31829404064 is a deficient number, since it is larger than the sum of its proper divisors (30947273284).

31829404064 is a wasteful number, since it uses less digits than its factorization.

31829404064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1786328 (or 1786320 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 41.

Adding to 31829404064 its reverse (46040492813), we get a palindrome (77869896877).

The spelling of 31829404064 in words is "thirty-one billion, eight hundred twenty-nine million, four hundred four thousand, sixty-four".