31321302131130 has 64 divisors (see below), whose sum is σ = 82005801591168. Its totient is φ = 7592956104960.

The previous prime is 31321302131107. The next prime is 31321302131153. The reversal of 31321302131130 is 3113120312313.

It is an interprime number because it is at equal distance from previous prime (31321302131107) and next prime (31321302131153).

It is a self number, because there is not a number n which added to its sum of digits gives 31321302131130.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31157844 + ... + 32147376.

It is an arithmetic number, because the mean of its divisors is an integer number (1281340649862).

Almost surely, 2^{31321302131130} is an apocalyptic number.

31321302131130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31321302131130 is an abundant number, since it is smaller than the sum of its proper divisors (50684499460038).

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

31321302131130 is a wasteful number, since it uses less digits than its factorization.

31321302131130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085471.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 31321302131130 its reverse (3113120312313), we get a palindrome (34434422443443).

The spelling of 31321302131130 in words is "thirty-one trillion, three hundred twenty-one billion, three hundred two million, one hundred thirty-one thousand, one hundred thirty".