3125278031 has 2 divisors, whose sum is σ = 3125278032. Its totient is φ = 3125278030.

The previous prime is 3125278027. The next prime is 3125278033. The reversal of 3125278031 is 1308725213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3125278031 - 2² = 3125278027 is a prime.

It is a super-2 number, since 2×3125278031² = 19534725542102473922, which contains 22 as substring.

Together with 3125278033, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3125278033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1562639015 + 1562639016.

It is an arithmetic number, because the mean of its divisors is an integer number (1562639016).

Almost surely, 2^3125278031 is an apocalyptic number.

3125278031 is a deficient number, since it is larger than the sum of its proper divisors (1).

3125278031 is an equidigital number, since it uses as much as digits as its factorization.

3125278031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 3125278031 is about 55904.1861670483. The cubic root of 3125278031 is about 1462.0522260913.

The spelling of 3125278031 in words is "three billion, one hundred twenty-five million, two hundred seventy-eight thousand, thirty-one".