121376531 has 4 divisors (see below), whose sum is σ = 121404864. Its totient is φ = 121348200.

The previous prime is 121376527. The next prime is 121376551. The reversal of 121376531 is 135673121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 135673121 = 7297 ⋅18593.

It is a cyclic number.

It is not a de Polignac number, because 121376531 - 2² = 121376527 is a prime.

It is a super-2 number, since 2×121376531² = 29464524555187922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121376494 and 121376503.

It is not an unprimeable number, because it can be changed into a prime (121376551) 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, 6275 + ... + 16796.

It is an arithmetic number, because the mean of its divisors is an integer number (30351216).

Almost surely, 2^121376531 is an apocalyptic number.

121376531 is a deficient number, since it is larger than the sum of its proper divisors (28333).

121376531 is an equidigital number, since it uses as much as digits as its factorization.

121376531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28332.

The product of its digits is 3780, while the sum is 29.

The square root of 121376531 is about 11017.1017513682. The cubic root of 121376531 is about 495.1212585972.

The spelling of 121376531 in words is "one hundred twenty-one million, three hundred seventy-six thousand, five hundred thirty-one".