7256131 has 4 divisors (see below), whose sum is σ = 7263432. Its totient is φ = 7248832.

The previous prime is 7256113. The next prime is 7256141. The reversal of 7256131 is 1316527.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 7256131 - 2⁵ = 7256099 is a prime.

It is a super-2 number, since 2×7256131² = 105302874178322, 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 = 7256096 and 7256105.

It is not an unprimeable number, because it can be changed into a prime (7256111) 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, 1870 + ... + 4243.

It is an arithmetic number, because the mean of its divisors is an integer number (1815858).

Almost surely, 2^7256131 is an apocalyptic number.

7256131 is a deficient number, since it is larger than the sum of its proper divisors (7301).

7256131 is a wasteful number, since it uses less digits than its factorization.

7256131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7300.

The product of its digits is 1260, while the sum is 25.

The square root of 7256131 is about 2693.7206610931. The cubic root of 7256131 is about 193.5983737740.

The spelling of 7256131 in words is "seven million, two hundred fifty-six thousand, one hundred thirty-one".