31102003004 has 12 divisors (see below), whose sum is σ = 54441831864. Its totient is φ = 15547193904.

The previous prime is 31102002949. The next prime is 31102003007. The reversal of 31102003004 is 40030020113.

It is a self number, because there is not a number n which added to its sum of digits gives 31102003004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31102003007) 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, 933482 + ... + 966225.

It is an arithmetic number, because the mean of its divisors is an integer number (4536819322).

Almost surely, 2^31102003004 is an apocalyptic number.

It is an amenable number.

31102003004 is a deficient number, since it is larger than the sum of its proper divisors (23339828860).

31102003004 is a wasteful number, since it uses less digits than its factorization.

31102003004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1903804 (or 1903802 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 31102003004 its reverse (40030020113), we get a palindrome (71132023117).

The spelling of 31102003004 in words is "thirty-one billion, one hundred two million, three thousand, four".