31020013012011 has 8 divisors (see below), whose sum is σ = 41360154370560. Its totient is φ = 20679940164072.

The previous prime is 31020013011983. The next prime is 31020013012033. The reversal of 31020013012011 is 11021031002013.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31020013012011 - 2⁶ = 31020013011947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31020013012211) 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, 16061695 + ... + 17889048.

It is an arithmetic number, because the mean of its divisors is an integer number (5170019296320).

Almost surely, 2^{31020013012011} is an apocalyptic number.

31020013012011 is a deficient number, since it is larger than the sum of its proper divisors (10340141358549).

31020013012011 is a wasteful number, since it uses less digits than its factorization.

31020013012011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34255305.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 31020013012011 its reverse (11021031002013), we get a palindrome (42041044014024).

The spelling of 31020013012011 in words is "thirty-one trillion, twenty billion, thirteen million, twelve thousand, eleven".