31443102 has 24 divisors (see below), whose sum is σ = 68309280. Its totient is φ = 10452960.

The previous prime is 31443091. The next prime is 31443133. The reversal of 31443102 is 20134413.

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 11 ways as a sum of consecutive naturals, for example, 5227 + ... + 9497.

It is an arithmetic number, because the mean of its divisors is an integer number (2846220).

Almost surely, 2^31443102 is an apocalyptic number.

31443102 is an abundant number, since it is smaller than the sum of its proper divisors (36866178).

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

31443102 is a wasteful number, since it uses less digits than its factorization.

31443102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4688 (or 4685 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 31443102 is about 5607.4149124173. The cubic root of 31443102 is about 315.6277127761.

Adding to 31443102 its reverse (20134413), we get a palindrome (51577515).

The spelling of 31443102 in words is "thirty-one million, four hundred forty-three thousand, one hundred two".