31130004000 has 96 divisors (see below), whose sum is σ = 101981932416. Its totient is φ = 8301331200.

The previous prime is 31130003999. The next prime is 31130004001. The reversal of 31130004000 is 40003113.

It is an interprime number because it is at equal distance from previous prime (31130003999) and next prime (31130004001).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (31130004001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1285084 + ... + 1309083.

It is an arithmetic number, because the mean of its divisors is an integer number (1062311796).

Almost surely, 2^31130004000 is an apocalyptic number.

31130004000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31130004000 is an abundant number, since it is smaller than the sum of its proper divisors (70851928416).

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

31130004000 is a wasteful number, since it uses less digits than its factorization.

31130004000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2594195 (or 2594177 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 31130004000 its reverse (40003113), we get a palindrome (31170007113).

The spelling of 31130004000 in words is "thirty-one billion, one hundred thirty million, four thousand".