31310123130 has 160 divisors (see below), whose sum is σ = 98908242048. Its totient is φ = 7006435200.

The previous prime is 31310123029. The next prime is 31310123147. The reversal of 31310123130 is 3132101313.

It is a happy number.

31310123130 is a `hidden beast` number, since 31 + 310 + 12 + 313 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 19326 + ... + 250985.

Almost surely, 2^31310123130 is an apocalyptic number.

31310123130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 31310123130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49454121024).

31310123130 is an abundant number, since it is smaller than the sum of its proper divisors (67598118918).

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

31310123130 is a wasteful number, since it uses less digits than its factorization.

31310123130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270354 (or 270345 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 31310123130 its reverse (3132101313), we get a palindrome (34442224443).

The spelling of 31310123130 in words is "thirty-one billion, three hundred ten million, one hundred twenty-three thousand, one hundred thirty".