31402528452 has 108 divisors (see below), whose sum is σ = 87989481216. Its totient is φ = 9423363840.

The previous prime is 31402528427. The next prime is 31402528457. The reversal of 31402528452 is 25482520413.

It is a super-2 number, since 2×31402528452² (a number of 22 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (31402528457) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 173677 + ... + 304907.

Almost surely, 2^31402528452 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31402528452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43994740608).

31402528452 is an abundant number, since it is smaller than the sum of its proper divisors (56586952764).

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

31402528452 is a wasteful number, since it uses less digits than its factorization.

31402528452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131298 (or 131276 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

The spelling of 31402528452 in words is "thirty-one billion, four hundred two million, five hundred twenty-eight thousand, four hundred fifty-two".