101625731 has 2 divisors, whose sum is σ = 101625732. Its totient is φ = 101625730.

The previous prime is 101625721. The next prime is 101625787. The reversal of 101625731 is 137526101.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101625731 is a prime.

It is a super-2 number, since 2×101625731² = 20655578402568722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101625731.

It is not a weakly prime, because it can be changed into another prime (101625701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50812865 + 50812866.

It is an arithmetic number, because the mean of its divisors is an integer number (50812866).

Almost surely, 2^101625731 is an apocalyptic number.

101625731 is a deficient number, since it is larger than the sum of its proper divisors (1).

101625731 is an equidigital number, since it uses as much as digits as its factorization.

101625731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 101625731 is about 10080.9588333650. The cubic root of 101625731 is about 466.6606993001.

The spelling of 101625731 in words is "one hundred one million, six hundred twenty-five thousand, seven hundred thirty-one".