71631453 has 16 divisors (see below), whose sum is σ = 100638720. Its totient is φ = 45230064.

The previous prime is 71631449. The next prime is 71631457. The reversal of 71631453 is 35413617.

It is an interprime number because it is at equal distance from previous prime (71631449) and next prime (71631457).

It is not a de Polignac number, because 71631453 - 2² = 71631449 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71631453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71631457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2068 + ... + 12146.

It is an arithmetic number, because the mean of its divisors is an integer number (6289920).

Almost surely, 2^71631453 is an apocalyptic number.

It is an amenable number.

71631453 is a deficient number, since it is larger than the sum of its proper divisors (29007267).

71631453 is a wasteful number, since it uses less digits than its factorization.

71631453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10208.

The product of its digits is 7560, while the sum is 30.

The square root of 71631453 is about 8463.5366721011. The cubic root of 71631453 is about 415.3057272025.

The spelling of 71631453 in words is "seventy-one million, six hundred thirty-one thousand, four hundred fifty-three".