31401042 has 16 divisors (see below), whose sum is σ = 62862240. Its totient is φ = 10456992.

The previous prime is 31401037. The next prime is 31401043. The reversal of 31401042 is 24010413.

It is not an unprimeable number, because it can be changed into a prime (31401043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7134 + ... + 10662.

It is an arithmetic number, because the mean of its divisors is an integer number (3928890).

Almost surely, 2^31401042 is an apocalyptic number.

31401042 is an abundant number, since it is smaller than the sum of its proper divisors (31461198).

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

31401042 is a wasteful number, since it uses less digits than its factorization.

31401042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5017.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 31401042 is about 5603.6632661144. The cubic root of 31401042 is about 315.4869163914.

Adding to 31401042 its reverse (24010413), we get a palindrome (55411455).

The spelling of 31401042 in words is "thirty-one million, four hundred one thousand, forty-two".