71402631 has 4 divisors (see below), whose sum is σ = 95203512. Its totient is φ = 47601752.

The previous prime is 71402629. The next prime is 71402647. The reversal of 71402631 is 13620417.

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 71402631 - 2¹ = 71402629 is a prime.

It is a super-2 number, since 2×71402631² = 10196671427444322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71402621) 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, 11900436 + ... + 11900441.

It is an arithmetic number, because the mean of its divisors is an integer number (23800878).

Almost surely, 2^71402631 is an apocalyptic number.

71402631 is a deficient number, since it is larger than the sum of its proper divisors (23800881).

71402631 is a wasteful number, since it uses less digits than its factorization.

71402631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23800880.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 71402631 is about 8450.0077514757. The cubic root of 71402631 is about 414.8630331378.

The spelling of 71402631 in words is "seventy-one million, four hundred two thousand, six hundred thirty-one".