121431004304031 has 8 divisors (see below), whose sum is σ = 179897784154160. Its totient is φ = 80954002869336.

The previous prime is 121431004303993. The next prime is 121431004304039. The reversal of 121431004304031 is 130403400134121.

121431004304031 is a `hidden beast` number, since 1 + 2 + 14 + 310 + 0 + 4 + 304 + 0 + 31 = 666.

It is not a de Polignac number, because 121431004304031 - 2¹¹ = 121431004301983 is a prime.

It is a super-2 number, since 2×121431004304031² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4497444603853 = 121431004304031 / (1 + 2 + 1 + 4 + 3 + 1 + 0 + 0 + 4 + 3 + 0 + 4 + 0 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121431004303986 and 121431004304004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121431004304039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2248722301900 + ... + 2248722301953.

It is an arithmetic number, because the mean of its divisors is an integer number (22487223019270).

Almost surely, 2^{121431004304031} is an apocalyptic number.

121431004304031 is a deficient number, since it is larger than the sum of its proper divisors (58466779850129).

121431004304031 is an equidigital number, since it uses as much as digits as its factorization.

121431004304031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4497444603862 (or 4497444603856 counting only the distinct ones).

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

Adding to 121431004304031 its reverse (130403400134121), we get a palindrome (251834404438152).

The spelling of 121431004304031 in words is "one hundred twenty-one trillion, four hundred thirty-one billion, four million, three hundred four thousand, thirty-one".