31020001004 has 6 divisors (see below), whose sum is σ = 54285001764. Its totient is φ = 15510000500.

The previous prime is 31020000967. The next prime is 31020001007. The reversal of 31020001004 is 40010002013.

It is a happy number.

It is a super-2 number, since 2×31020001004² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31020001007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3877500122 + ... + 3877500129.

It is an arithmetic number, because the mean of its divisors is an integer number (9047500294).

Almost surely, 2^31020001004 is an apocalyptic number.

It is an amenable number.

31020001004 is a deficient number, since it is larger than the sum of its proper divisors (23265000760).

31020001004 is a wasteful number, since it uses less digits than its factorization.

31020001004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7755000255 (or 7755000253 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 31020001004 its reverse (40010002013), we get a palindrome (71030003017).

The spelling of 31020001004 in words is "thirty-one billion, twenty million, one thousand, four".