121404314531 has 4 divisors (see below), whose sum is σ = 121405351992. Its totient is φ = 121403277072.

The previous prime is 121404314527. The next prime is 121404314543. The reversal of 121404314531 is 135413404121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 135413404121 = 37 ⋅3659821733.

It is a cyclic number.

It is not a de Polignac number, because 121404314531 - 2² = 121404314527 is a prime.

It is a super-2 number, since 2×121404314531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121404314494 and 121404314503.

It is not an unprimeable number, because it can be changed into a prime (121404214531) 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, 317066 + ... + 585951.

It is an arithmetic number, because the mean of its divisors is an integer number (30351337998).

Almost surely, 2^121404314531 is an apocalyptic number.

121404314531 is a deficient number, since it is larger than the sum of its proper divisors (1037461).

121404314531 is an equidigital number, since it uses as much as digits as its factorization.

121404314531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037460.

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 121404314531 its reverse (135413404121), we get a palindrome (256817718652).

The spelling of 121404314531 in words is "one hundred twenty-one billion, four hundred four million, three hundred fourteen thousand, five hundred thirty-one".