31121300130 has 16 divisors (see below), whose sum is σ = 74691120384. Its totient is φ = 8299013360.

The previous prime is 31121300129. The next prime is 31121300131. The reversal of 31121300130 is 3100312113.

It is an interprime number because it is at equal distance from previous prime (31121300129) and next prime (31121300131).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (31121300131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 518688306 + ... + 518688365.

It is an arithmetic number, because the mean of its divisors is an integer number (4668195024).

Almost surely, 2^31121300130 is an apocalyptic number.

31121300130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31121300130 is an abundant number, since it is smaller than the sum of its proper divisors (43569820254).

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

31121300130 is a wasteful number, since it uses less digits than its factorization.

31121300130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037376681.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 31121300130 its reverse (3100312113), we get a palindrome (34221612243).

The spelling of 31121300130 in words is "thirty-one billion, one hundred twenty-one million, three hundred thousand, one hundred thirty".