125200031 has 12 divisors (see below), whose sum is σ = 137894400. Its totient is φ = 113588640.

The previous prime is 125200021. The next prime is 125200043. The reversal of 125200031 is 130002521.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-125200031 is a prime.

It is a super-2 number, since 2×125200031² = 31350095524801922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125199979 and 125200015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125200021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97250 + ... + 98528.

It is an arithmetic number, because the mean of its divisors is an integer number (11491200).

Almost surely, 2^125200031 is an apocalyptic number.

125200031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

125200031 is a deficient number, since it is larger than the sum of its proper divisors (12694369).

125200031 is a wasteful number, since it uses less digits than its factorization.

125200031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2110 (or 2099 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 125200031 is about 11189.2819698138. The cubic root of 125200031 is about 500.2665658600.

Adding to 125200031 its reverse (130002521), we get a palindrome (255202552).

The spelling of 125200031 in words is "one hundred twenty-five million, two hundred thousand, thirty-one".