131249890 has 16 divisors (see below), whose sum is σ = 239578560. Its totient is φ = 51760240.

The previous prime is 131249873. The next prime is 131249933. The reversal of 131249890 is 98942131.

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, 91720 + ... + 93139.

It is an arithmetic number, because the mean of its divisors is an integer number (14973660).

Almost surely, 2^131249890 is an apocalyptic number.

131249890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131249890 is a deficient number, since it is larger than the sum of its proper divisors (108328670).

131249890 is a wasteful number, since it uses less digits than its factorization.

131249890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184937.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 131249890 is about 11456.4344365950. The cubic root of 131249890 is about 508.1980364346.

The spelling of 131249890 in words is "one hundred thirty-one million, two hundred forty-nine thousand, eight hundred ninety".