20112012031 has 8 divisors (see below), whose sum is σ = 21219667200. Its totient is φ = 19009269720.

The previous prime is 20112012029. The next prime is 20112012071. The reversal of 20112012031 is 13021021102.

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

It is not a de Polignac number, because 20112012031 - 2¹ = 20112012029 is a prime.

It is a super-2 number, since 2×20112012031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112012001) 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, 1219801 + ... + 1236178.

It is an arithmetic number, because the mean of its divisors is an integer number (2652458400).

Almost surely, 2^20112012031 is an apocalyptic number.

20112012031 is a deficient number, since it is larger than the sum of its proper divisors (1107655169).

20112012031 is a wasteful number, since it uses less digits than its factorization.

20112012031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2456429.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20112012031 its reverse (13021021102), we get a palindrome (33133033133).

The spelling of 20112012031 in words is "twenty billion, one hundred twelve million, twelve thousand, thirty-one".