31350132 has 72 divisors (see below), whose sum is σ = 89376000. Its totient is φ = 9496080.

The previous prime is 31350103. The next prime is 31350149. The reversal of 31350132 is 23105313.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 11869 + ... + 14267.

Almost surely, 2^31350132 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 31350132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44688000).

31350132 is an abundant number, since it is smaller than the sum of its proper divisors (58025868).

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

31350132 is a wasteful number, since it uses less digits than its factorization.

31350132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2434 (or 2415 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 31350132 is about 5599.1188592492. The cubic root of 31350132 is about 315.3163262266.

Adding to 31350132 its reverse (23105313), we get a palindrome (54455445).

The spelling of 31350132 in words is "thirty-one million, three hundred fifty thousand, one hundred thirty-two".