125701031 has 4 divisors (see below), whose sum is σ = 125959632. Its totient is φ = 125442432.

The previous prime is 125700947. The next prime is 125701033. The reversal of 125701031 is 130107521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130107521 = 307 ⋅423803.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125701031 is a prime.

It is a super-2 number, since 2×125701031² = 31601498388925922, 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 = 125700994 and 125701012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125701033) 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 3 ways as a sum of consecutive naturals, for example, 128570 + ... + 129543.

It is an arithmetic number, because the mean of its divisors is an integer number (31489908).

Almost surely, 2^125701031 is an apocalyptic number.

125701031 is a deficient number, since it is larger than the sum of its proper divisors (258601).

125701031 is an equidigital number, since it uses as much as digits as its factorization.

125701031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258600.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 125701031 is about 11211.6471136047. The cubic root of 125701031 is about 500.9329660659.

Adding to 125701031 its reverse (130107521), we get a palindrome (255808552).

The spelling of 125701031 in words is "one hundred twenty-five million, seven hundred one thousand, thirty-one".