212431102011031 has 4 divisors (see below), whose sum is σ = 212647206897072. Its totient is φ = 212214997124992.

The previous prime is 212431102011001. The next prime is 212431102011157. The reversal of 212431102011031 is 130110201134212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212431102011031 - 2⁵ = 212431102010999 is a prime.

It is a super-2 number, since 2×212431102011031² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212431102010993 and 212431102011011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212431102011001) 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, 108052441546 + ... + 108052443511.

It is an arithmetic number, because the mean of its divisors is an integer number (53161801724268).

Almost surely, 2^{212431102011031} is an apocalyptic number.

212431102011031 is a deficient number, since it is larger than the sum of its proper divisors (216104886041).

212431102011031 is an equidigital number, since it uses as much as digits as its factorization.

212431102011031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216104886040.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 212431102011031 its reverse (130110201134212), we get a palindrome (342541303145243).

The spelling of 212431102011031 in words is "two hundred twelve trillion, four hundred thirty-one billion, one hundred two million, eleven thousand, thirty-one".