12701631 has 4 divisors (see below), whose sum is σ = 16935512. Its totient is φ = 8467752.

The previous prime is 12701627. The next prime is 12701639. The reversal of 12701631 is 13610721.

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

It is not a de Polignac number, because 12701631 - 2² = 12701627 is a prime.

It is a super-2 number, since 2×12701631² = 322662860120322, 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 = 12701598 and 12701607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12701639) 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, 2116936 + ... + 2116941.

It is an arithmetic number, because the mean of its divisors is an integer number (4233878).

Almost surely, 2^12701631 is an apocalyptic number.

12701631 is a deficient number, since it is larger than the sum of its proper divisors (4233881).

12701631 is an equidigital number, since it uses as much as digits as its factorization.

12701631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4233880.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 12701631 is about 3563.9347637127. The cubic root of 12701631 is about 233.3206426204.

The spelling of 12701631 in words is "twelve million, seven hundred one thousand, six hundred thirty-one".