31001302012 has 24 divisors (see below), whose sum is σ = 54689409936. Its totient is φ = 15375927168.

The previous prime is 31001302001. The next prime is 31001302019. The reversal of 31001302012 is 21020310013.

It is a super-2 number, since 2×31001302012² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31001301983 and 31001302001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31001302019) 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, 731803 + ... + 773005.

It is an arithmetic number, because the mean of its divisors is an integer number (2278725414).

Almost surely, 2^31001302012 is an apocalyptic number.

It is an amenable number.

31001302012 is a deficient number, since it is larger than the sum of its proper divisors (23688107924).

31001302012 is a wasteful number, since it uses less digits than its factorization.

31001302012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42717 (or 42715 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 31001302012 its reverse (21020310013), we get a palindrome (52021612025).

The spelling of 31001302012 in words is "thirty-one billion, one million, three hundred two thousand, twelve".