31461552 has 60 divisors (see below), whose sum is σ = 90114024. Its totient is φ = 10241280.

The previous prime is 31461533. The next prime is 31461553. The reversal of 31461552 is 25516413.

It is not an unprimeable number, because it can be changed into a prime (31461553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3652 + ... + 8732.

Almost surely, 2^31461552 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 31461552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45057012).

31461552 is an abundant number, since it is smaller than the sum of its proper divisors (58652472).

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

31461552 is a wasteful number, since it uses less digits than its factorization.

31461552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5138 (or 5129 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 31461552 is about 5609.0598142648. The cubic root of 31461552 is about 315.6894347682.

Adding to 31461552 its reverse (25516413), we get a palindrome (56977965).

The spelling of 31461552 in words is "thirty-one million, four hundred sixty-one thousand, five hundred fifty-two".