31020204004 has 48 divisors (see below), whose sum is σ = 59794459200. Its totient is φ = 14026836096.

The previous prime is 31020204001. The next prime is 31020204013. The reversal of 31020204004 is 40040202013.

It is not an unprimeable number, because it can be changed into a prime (31020204001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44967 + ... + 253105.

It is an arithmetic number, because the mean of its divisors is an integer number (1245717900).

Almost surely, 2^31020204004 is an apocalyptic number.

It is an amenable number.

31020204004 is a deficient number, since it is larger than the sum of its proper divisors (28774255196).

31020204004 is a wasteful number, since it uses less digits than its factorization.

31020204004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208252 (or 208250 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 31020204004 its reverse (40040202013), we get a palindrome (71060406017).

The spelling of 31020204004 in words is "thirty-one billion, twenty million, two hundred four thousand, four".