231211120133102 has 16 divisors (see below), whose sum is σ = 351716553489024. Its totient is φ = 113972409075000.

The previous prime is 231211120133083. The next prime is 231211120133137. The reversal of 231211120133102 is 201331021112132.

It is a happy number.

It is a super-2 number, since 2×231211120133102² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31712924 + ... + 38316207.

It is an arithmetic number, because the mean of its divisors is an integer number (21982284593064).

Almost surely, 2^{231211120133102} is an apocalyptic number.

231211120133102 is a deficient number, since it is larger than the sum of its proper divisors (120505433355922).

231211120133102 is a wasteful number, since it uses less digits than its factorization.

231211120133102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70052455.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 231211120133102 its reverse (201331021112132), we get a palindrome (432542141245234).

The spelling of 231211120133102 in words is "two hundred thirty-one trillion, two hundred eleven billion, one hundred twenty million, one hundred thirty-three thousand, one hundred two".