31144331130 has 64 divisors (see below), whose sum is σ = 81851793408. Its totient is φ = 7521412160.

The previous prime is 31144331089. The next prime is 31144331131. The reversal of 31144331130 is 3113344113.

It is a self number, because there is not a number n which added to its sum of digits gives 31144331130.

It is not an unprimeable number, because it can be changed into a prime (31144331131) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 92634 + ... + 266213.

It is an arithmetic number, because the mean of its divisors is an integer number (1278934272).

Almost surely, 2^31144331130 is an apocalyptic number.

31144331130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31144331130 is an abundant number, since it is smaller than the sum of its proper divisors (50707462278).

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

31144331130 is a wasteful number, since it uses less digits than its factorization.

31144331130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359131.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 31144331130 its reverse (3113344113), we get a palindrome (34257675243).

The spelling of 31144331130 in words is "thirty-one billion, one hundred forty-four million, three hundred thirty-one thousand, one hundred thirty".