10311021123231 has 4 divisors (see below), whose sum is σ = 13748028164312. Its totient is φ = 6874014082152.

The previous prime is 10311021123211. The next prime is 10311021123329. The reversal of 10311021123231 is 13232112011301.

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

It is not a de Polignac number, because 10311021123231 - 2⁷ = 10311021123103 is a prime.

It is a super-2 number, since 2×10311021123231² (a number of 27 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 = 10311021123198 and 10311021123207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10311021123211) 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, 1718503520536 + ... + 1718503520541.

It is an arithmetic number, because the mean of its divisors is an integer number (3437007041078).

Almost surely, 2^{10311021123231} is an apocalyptic number.

10311021123231 is a deficient number, since it is larger than the sum of its proper divisors (3437007041081).

10311021123231 is an equidigital number, since it uses as much as digits as its factorization.

10311021123231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3437007041080.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 10311021123231 its reverse (13232112011301), we get a palindrome (23543133134532).

The spelling of 10311021123231 in words is "ten trillion, three hundred eleven billion, twenty-one million, one hundred twenty-three thousand, two hundred thirty-one".