31461372 has 30 divisors (see below), whose sum is σ = 82247088. Its totient is φ = 10487016.

The previous prime is 31461361. The next prime is 31461403. The reversal of 31461372 is 27316413.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 48228 + ... + 48875.

Almost surely, 2^31461372 is an apocalyptic number.

It is an amenable number.

31461372 is an abundant number, since it is smaller than the sum of its proper divisors (50785716).

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

31461372 is a wasteful number, since it uses less digits than its factorization.

31461372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97119 (or 97108 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 31461372 is about 5609.0437687720. The cubic root of 31461372 is about 315.6888327190.

Adding to 31461372 its reverse (27316413), we get a palindrome (58777785).

The spelling of 31461372 in words is "thirty-one million, four hundred sixty-one thousand, three hundred seventy-two".