131121954 has 48 divisors (see below), whose sum is σ = 290571840. Its totient is φ = 42720480.

The previous prime is 131121953. The next prime is 131121959. The reversal of 131121954 is 459121131.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (131121953) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 330084 + ... + 330480.

It is an arithmetic number, because the mean of its divisors is an integer number (6053580).

Almost surely, 2^131121954 is an apocalyptic number.

131121954 is an abundant number, since it is smaller than the sum of its proper divisors (159449886).

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

131121954 is a wasteful number, since it uses less digits than its factorization.

131121954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775 (or 772 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 131121954 is about 11450.8494881384. The cubic root of 131121954 is about 508.0328605234.

The spelling of 131121954 in words is "one hundred thirty-one million, one hundred twenty-one thousand, nine hundred fifty-four".