106251631 has 4 divisors (see below), whose sum is σ = 108512352. Its totient is φ = 103990912.

The previous prime is 106251619. The next prime is 106251637. The reversal of 106251631 is 136152601.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-106251631 is a prime.

It is a super-2 number, since 2×106251631² = 22578818180320322, 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 = 106251596 and 106251605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106251637) 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, 1130290 + ... + 1130383.

It is an arithmetic number, because the mean of its divisors is an integer number (27128088).

Almost surely, 2^106251631 is an apocalyptic number.

106251631 is a deficient number, since it is larger than the sum of its proper divisors (2260721).

106251631 is an equidigital number, since it uses as much as digits as its factorization.

106251631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2260720.

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

The square root of 106251631 is about 10307.8431788614. The cubic root of 106251631 is about 473.6365421013.

The spelling of 106251631 in words is "one hundred six million, two hundred fifty-one thousand, six hundred thirty-one".