31545422004 has 24 divisors (see below), whose sum is σ = 73627011808. Its totient is φ = 10512136800.

The previous prime is 31545421997. The next prime is 31545422039. The reversal of 31545422004 is 40022454513.

It is a super-2 number, since 2×31545422004² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331522 + ... + 415929.

Almost surely, 2^31545422004 is an apocalyptic number.

It is an amenable number.

31545422004 is an abundant number, since it is smaller than the sum of its proper divisors (42081589804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31545422004 is a wasteful number, since it uses less digits than its factorization.

31545422004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750975 (or 750973 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 31545422004 its reverse (40022454513), we get a palindrome (71567876517).

The spelling of 31545422004 in words is "thirty-one billion, five hundred forty-five million, four hundred twenty-two thousand, four".