210120672431 has 2 divisors, whose sum is σ = 210120672432. Its totient is φ = 210120672430.

The previous prime is 210120672379. The next prime is 210120672439. The reversal of 210120672431 is 134276021012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 210120672431 - 2¹⁰ = 210120671407 is a prime.

It is a super-2 number, since 2×210120672431² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 210120672394 and 210120672403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210120672439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105060336215 + 105060336216.

It is an arithmetic number, because the mean of its divisors is an integer number (105060336216).

Almost surely, 2^210120672431 is an apocalyptic number.

210120672431 is a deficient number, since it is larger than the sum of its proper divisors (1).

210120672431 is an equidigital number, since it uses as much as digits as its factorization.

210120672431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

Adding to 210120672431 its reverse (134276021012), we get a palindrome (344396693443).

The spelling of 210120672431 in words is "two hundred ten billion, one hundred twenty million, six hundred seventy-two thousand, four hundred thirty-one".