31442302012 has 12 divisors (see below), whose sum is σ = 60026213016. Its totient is φ = 14291955440.

The previous prime is 31442301959. The next prime is 31442302013. The reversal of 31442302012 is 21020324413.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31442302013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357298843 + ... + 357298930.

It is an arithmetic number, because the mean of its divisors is an integer number (5002184418).

Almost surely, 2^31442302012 is an apocalyptic number.

It is an amenable number.

31442302012 is a deficient number, since it is larger than the sum of its proper divisors (28583911004).

31442302012 is a wasteful number, since it uses less digits than its factorization.

31442302012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714597788 (or 714597786 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 31442302012 its reverse (21020324413), we get a palindrome (52462626425).

The spelling of 31442302012 in words is "thirty-one billion, four hundred forty-two million, three hundred two thousand, twelve".