31416042 has 32 divisors (see below), whose sum is σ = 72000000. Its totient is φ = 8952048.

The previous prime is 31416041. The next prime is 31416043. The reversal of 31416042 is 24061413.

It is an interprime number because it is at equal distance from previous prime (31416041) and next prime (31416043).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (31416041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20209 + ... + 21707.

It is an arithmetic number, because the mean of its divisors is an integer number (2250000).

Almost surely, 2^31416042 is an apocalyptic number.

31416042 is an abundant number, since it is smaller than the sum of its proper divisors (40583958).

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

31416042 is a wasteful number, since it uses less digits than its factorization.

31416042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 31416042 is about 5605.0015165029. The cubic root of 31416042 is about 315.5371434976.

Adding to 31416042 its reverse (24061413), we get a palindrome (55477455).

The spelling of 31416042 in words is "thirty-one million, four hundred sixteen thousand, forty-two".