31443942 has 16 divisors (see below), whose sum is σ = 62988912. Its totient is φ = 10464480.

The previous prime is 31443941. The next prime is 31443949. The reversal of 31443942 is 24934413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31443941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192 + ... + 7932.

It is an arithmetic number, because the mean of its divisors is an integer number (3936807).

Almost surely, 2^31443942 is an apocalyptic number.

31443942 is an abundant number, since it is smaller than the sum of its proper divisors (31544970).

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

31443942 is a wasteful number, since it uses less digits than its factorization.

31443942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8423.

The product of its digits is 10368, while the sum is 30.

The square root of 31443942 is about 5607.4898127415. The cubic root of 31443942 is about 315.6305234076.

It can be divided in two parts, 31443 and 942, that added together give a triangular number (32385 = T₂₅₄).

The spelling of 31443942 in words is "thirty-one million, four hundred forty-three thousand, nine hundred forty-two".