121031333431 has 2 divisors, whose sum is σ = 121031333432. Its totient is φ = 121031333430.

The previous prime is 121031333257. The next prime is 121031333461. The reversal of 121031333431 is 134333130121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121031333431 - 2¹⁷ = 121031202359 is a prime.

It is a super-2 number, since 2×121031333431² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121031333396 and 121031333405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121031333461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60515666715 + 60515666716.

It is an arithmetic number, because the mean of its divisors is an integer number (60515666716).

Almost surely, 2^121031333431 is an apocalyptic number.

121031333431 is a deficient number, since it is larger than the sum of its proper divisors (1).

121031333431 is an equidigital number, since it uses as much as digits as its factorization.

121031333431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 121031333431 its reverse (134333130121), we get a palindrome (255364463552).

The spelling of 121031333431 in words is "one hundred twenty-one billion, thirty-one million, three hundred thirty-three thousand, four hundred thirty-one".