231513525420130 has 64 divisors (see below), whose sum is σ = 426018377041920. Its totient is φ = 90544073356800.

The previous prime is 231513525420091. The next prime is 231513525420137. The reversal of 231513525420130 is 31024525315132.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 231513525420130.

It is not an unprimeable number, because it can be changed into a prime (231513525420137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1977489495 + ... + 1977606565.

It is an arithmetic number, because the mean of its divisors is an integer number (6656537141280).

Almost surely, 2^{231513525420130} is an apocalyptic number.

231513525420130 is a deficient number, since it is larger than the sum of its proper divisors (194504851621790).

231513525420130 is a wasteful number, since it uses less digits than its factorization.

231513525420130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121315.

The product of its (nonzero) digits is 108000, while the sum is 37.

The spelling of 231513525420130 in words is "two hundred thirty-one trillion, five hundred thirteen billion, five hundred twenty-five million, four hundred twenty thousand, one hundred thirty".