71731275 has 48 divisors (see below), whose sum is σ = 147871488. Its totient is φ = 29808000.

The previous prime is 71731249. The next prime is 71731291. The reversal of 71731275 is 57213717.

It is not a de Polignac number, because 71731275 - 2¹⁵ = 71698507 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 436 + ... + 11985.

It is an arithmetic number, because the mean of its divisors is an integer number (3080656).

Almost surely, 2^71731275 is an apocalyptic number.

71731275 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

71731275 is an abundant number, since it is smaller than the sum of its proper divisors (76140213).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71731275 is a wasteful number, since it uses less digits than its factorization.

71731275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12452 (or 12447 counting only the distinct ones).

The product of its digits is 10290, while the sum is 33.

The square root of 71731275 is about 8469.4317991232. The cubic root of 71731275 is about 415.4985540691.

It can be divided in two parts, 7173 and 1275, that added together give a palindrome (8448).

The spelling of 71731275 in words is "seventy-one million, seven hundred thirty-one thousand, two hundred seventy-five".