121280631 has 8 divisors (see below), whose sum is σ = 161856000. Its totient is φ = 80779512.

The previous prime is 121280603. The next prime is 121280647. The reversal of 121280631 is 136082121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121280631 - 2⁷ = 121280503 is a prime.

It is a super-2 number, since 2×121280631² = 29417982911516322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121280671) 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, 14631 + ... + 21368.

It is an arithmetic number, because the mean of its divisors is an integer number (20232000).

Almost surely, 2^121280631 is an apocalyptic number.

121280631 is a deficient number, since it is larger than the sum of its proper divisors (40575369).

121280631 is a wasteful number, since it uses less digits than its factorization.

121280631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37125.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 121280631 is about 11012.7485670018. The cubic root of 121280631 is about 494.9908252559.

The spelling of 121280631 in words is "one hundred twenty-one million, two hundred eighty thousand, six hundred thirty-one".