125536031 has 4 divisors (see below), whose sum is σ = 126779064. Its totient is φ = 124293000.

The previous prime is 125536027. The next prime is 125536039. The reversal of 125536031 is 130635521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130635521 = 101 ⋅1293421.

It is a cyclic number.

It is not a de Polignac number, because 125536031 - 2² = 125536027 is a prime.

It is a super-2 number, since 2×125536031² = 31518590158465922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125536039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 621365 + ... + 621566.

It is an arithmetic number, because the mean of its divisors is an integer number (31694766).

Almost surely, 2^125536031 is an apocalyptic number.

125536031 is a deficient number, since it is larger than the sum of its proper divisors (1243033).

125536031 is a wasteful number, since it uses less digits than its factorization.

125536031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243032.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 125536031 is about 11204.2862780277. The cubic root of 125536031 is about 500.7136888119.

The spelling of 125536031 in words is "one hundred twenty-five million, five hundred thirty-six thousand, thirty-one".