106312431 has 4 divisors (see below), whose sum is σ = 141749912. Its totient is φ = 70874952.

The previous prime is 106312421. The next prime is 106312471. The reversal of 106312431 is 134213601.

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

It is not a de Polignac number, because 106312431 - 2⁵ = 106312399 is a prime.

It is a super-2 number, since 2×106312431² = 22604665970259522, 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 = 106312398 and 106312407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106312421) 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, 17718736 + ... + 17718741.

It is an arithmetic number, because the mean of its divisors is an integer number (35437478).

Almost surely, 2^106312431 is an apocalyptic number.

106312431 is a deficient number, since it is larger than the sum of its proper divisors (35437481).

106312431 is an equidigital number, since it uses as much as digits as its factorization.

106312431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35437480.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 106312431 is about 10310.7919676424. The cubic root of 106312431 is about 473.7268673365.

The spelling of 106312431 in words is "one hundred six million, three hundred twelve thousand, four hundred thirty-one".