13271731452 has 72 divisors (see below), whose sum is σ = 38445295616. Its totient is φ = 3781564704.

The previous prime is 13271731433. The next prime is 13271731481. The reversal of 13271731452 is 25413717231.

13271731452 is a `hidden beast` number, since 1 + 32 + 7 + 173 + 1 + 452 = 666.

It is a super-2 number, since 2×13271731452² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20733 + ... + 164235.

Almost surely, 2^13271731452 is an apocalyptic number.

13271731452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13271731452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19222647808).

13271731452 is an abundant number, since it is smaller than the sum of its proper divisors (25173564164).

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

13271731452 is a wasteful number, since it uses less digits than its factorization.

13271731452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143887 (or 143882 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The spelling of 13271731452 in words is "thirteen billion, two hundred seventy-one million, seven hundred thirty-one thousand, four hundred fifty-two".