101625631 has 4 divisors (see below), whose sum is σ = 101745072. Its totient is φ = 101506192.

The previous prime is 101625613. The next prime is 101625647. The reversal of 101625631 is 136526101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101625631 - 2¹⁷ = 101494559 is a prime.

It is a super-3 number, since 3×101625631³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101625596 and 101625605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101625691) 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, 58435 + ... + 60148.

It is an arithmetic number, because the mean of its divisors is an integer number (25436268).

Almost surely, 2^101625631 is an apocalyptic number.

101625631 is a deficient number, since it is larger than the sum of its proper divisors (119441).

101625631 is an equidigital number, since it uses as much as digits as its factorization.

101625631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119440.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 101625631 is about 10080.9538735181. The cubic root of 101625631 is about 466.6605462349.

The spelling of 101625631 in words is "one hundred one million, six hundred twenty-five thousand, six hundred thirty-one".