31231134440130 has 16 divisors (see below), whose sum is σ = 74954722656384. Its totient is φ = 8328302517360.

The previous prime is 31231134440113. The next prime is 31231134440137. The reversal of 31231134440130 is 3104443113213.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 1041037814671 = 31231134440130 / (3 + 1 + 2 + 3 + 1 + 1 + 3 + 4 + 4 + 4 + 0 + 1 + 3 + 0).

It is not an unprimeable number, because it can be changed into a prime (31231134440137) 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, 520518907306 + ... + 520518907365.

It is an arithmetic number, because the mean of its divisors is an integer number (4684670166024).

Almost surely, 2^{31231134440130} is an apocalyptic number.

31231134440130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31231134440130 is an abundant number, since it is smaller than the sum of its proper divisors (43723588216254).

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

31231134440130 is a wasteful number, since it uses less digits than its factorization.

31231134440130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041037814681.

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 31231134440130 its reverse (3104443113213), we get a palindrome (34335577553343).

The spelling of 31231134440130 in words is "thirty-one trillion, two hundred thirty-one billion, one hundred thirty-four million, four hundred forty thousand, one hundred thirty".