125431230311320 has 128 divisors (see below), whose sum is σ = 295659905587200. Its totient is φ = 47836731571200.

The previous prime is 125431230311281. The next prime is 125431230311323. The reversal of 125431230311320 is 23113032134521.

It is a super-2 number, since 2×125431230311320² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125431230311323) 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, 19801572 + ... + 25356748.

It is an arithmetic number, because the mean of its divisors is an integer number (2309843012400).

Almost surely, 2^{125431230311320} is an apocalyptic number.

125431230311320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125431230311320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147829952793600).

125431230311320 is an abundant number, since it is smaller than the sum of its proper divisors (170228675275880).

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

125431230311320 is a wasteful number, since it uses less digits than its factorization.

125431230311320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5555489 (or 5555485 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 125431230311320 its reverse (23113032134521), we get a palindrome (148544262445841).

The spelling of 125431230311320 in words is "one hundred twenty-five trillion, four hundred thirty-one billion, two hundred thirty million, three hundred eleven thousand, three hundred twenty".