121123303431 has 16 divisors (see below), whose sum is σ = 173933205600. Its totient is φ = 74532032640.

The previous prime is 121123303393. The next prime is 121123303439. The reversal of 121123303431 is 134303321121.

It is not a de Polignac number, because 121123303431 - 2¹⁸ = 121123041287 is a prime.

It is a super-2 number, since 2×121123303431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121123303439) 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, 473245 + ... + 682793.

It is an arithmetic number, because the mean of its divisors is an integer number (10870825350).

Almost surely, 2^121123303431 is an apocalyptic number.

121123303431 is a deficient number, since it is larger than the sum of its proper divisors (52809902169).

121123303431 is a wasteful number, since it uses less digits than its factorization.

121123303431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224386.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 121123303431 its reverse (134303321121), we get a palindrome (255426624552).

The spelling of 121123303431 in words is "one hundred twenty-one billion, one hundred twenty-three million, three hundred three thousand, four hundred thirty-one".