121342031302431 has 4 divisors (see below), whose sum is σ = 161789375069912. Its totient is φ = 80894687534952.

The previous prime is 121342031302423. The next prime is 121342031302477. The reversal of 121342031302431 is 134203130243121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 121342031302431 - 2³ = 121342031302423 is a prime.

It is a super-2 number, since 2×121342031302431² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121342031302031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20223671883736 + ... + 20223671883741.

It is an arithmetic number, because the mean of its divisors is an integer number (40447343767478).

Almost surely, 2^{121342031302431} is an apocalyptic number.

121342031302431 is a deficient number, since it is larger than the sum of its proper divisors (40447343767481).

121342031302431 is an equidigital number, since it uses as much as digits as its factorization.

121342031302431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40447343767480.

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 121342031302431 its reverse (134203130243121), we get a palindrome (255545161545552).

The spelling of 121342031302431 in words is "one hundred twenty-one trillion, three hundred forty-two billion, thirty-one million, three hundred two thousand, four hundred thirty-one".