211431130023 has 16 divisors (see below), whose sum is σ = 291028198400. Its totient is φ = 136394893440.

The previous prime is 211431130013. The next prime is 211431130051. The reversal of 211431130023 is 320031134112.

It is not a de Polignac number, because 211431130023 - 2⁵ = 211431129991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211431130013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 998943 + ... + 1191951.

It is an arithmetic number, because the mean of its divisors is an integer number (18189262400).

Almost surely, 2^211431130023 is an apocalyptic number.

211431130023 is a deficient number, since it is larger than the sum of its proper divisors (79597068377).

211431130023 is a wasteful number, since it uses less digits than its factorization.

211431130023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204822.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 211431130023 its reverse (320031134112), we get a palindrome (531462264135).

The spelling of 211431130023 in words is "two hundred eleven billion, four hundred thirty-one million, one hundred thirty thousand, twenty-three".