121233241431 has 32 divisors (see below), whose sum is σ = 198438059520. Its totient is φ = 72760609152.

The previous prime is 121233241417. The next prime is 121233241439. The reversal of 121233241431 is 134142332121.

121233241431 is a `hidden beast` number, since 1 + 212 + 3 + 3 + 2 + 414 + 31 = 666.

It is not a de Polignac number, because 121233241431 - 2⁵ = 121233241399 is a prime.

It is a super-2 number, since 2×121233241431² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 121233241395 and 121233241404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121233241439) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5731285 + ... + 5752398.

It is an arithmetic number, because the mean of its divisors is an integer number (6201189360).

Almost surely, 2^121233241431 is an apocalyptic number.

121233241431 is a deficient number, since it is larger than the sum of its proper divisors (77204818089).

121233241431 is a wasteful number, since it uses less digits than its factorization.

121233241431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11483732 (or 11483726 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

Adding to 121233241431 its reverse (134142332121), we get a palindrome (255375573552).

The spelling of 121233241431 in words is "one hundred twenty-one billion, two hundred thirty-three million, two hundred forty-one thousand, four hundred thirty-one".