20102313431 has 2 divisors, whose sum is σ = 20102313432. Its totient is φ = 20102313430.

The previous prime is 20102313403. The next prime is 20102313457. The reversal of 20102313431 is 13431320102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20102313431 - 2¹⁰ = 20102312407 is a prime.

It is a super-2 number, since 2×20102313431² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20302313431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051156715 + 10051156716.

It is an arithmetic number, because the mean of its divisors is an integer number (10051156716).

Almost surely, 2^20102313431 is an apocalyptic number.

20102313431 is a deficient number, since it is larger than the sum of its proper divisors (1).

20102313431 is an equidigital number, since it uses as much as digits as its factorization.

20102313431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20102313431 its reverse (13431320102), we get a palindrome (33533633533).

The spelling of 20102313431 in words is "twenty billion, one hundred two million, three hundred thirteen thousand, four hundred thirty-one".