122831780 has 24 divisors (see below), whose sum is σ = 258461952. Its totient is φ = 49034592.

The previous prime is 122831759. The next prime is 122831801. The reversal of 122831780 is 87138221.

It is an interprime number because it is at equal distance from previous prime (122831759) and next prime (122831801).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4589 + ... + 16331.

It is an arithmetic number, because the mean of its divisors is an integer number (10769248).

Almost surely, 2^122831780 is an apocalyptic number.

122831780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122831780 is an abundant number, since it is smaller than the sum of its proper divisors (135630172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122831780 is a wasteful number, since it uses less digits than its factorization.

122831780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12275 (or 12273 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 122831780 is about 11082.9499683072. The cubic root of 122831780 is about 497.0921617363.

The spelling of 122831780 in words is "one hundred twenty-two million, eight hundred thirty-one thousand, seven hundred eighty".