131821076 has 6 divisors (see below), whose sum is σ = 230686890. Its totient is φ = 65910536.

The previous prime is 131821051. The next prime is 131821091. The reversal of 131821076 is 670128131.

It can be written as a sum of positive squares in only one way, i.e., 131698576 + 122500 = 11476^2 + 350^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16477631 + ... + 16477638.

It is an arithmetic number, because the mean of its divisors is an integer number (38447815).

Almost surely, 2^131821076 is an apocalyptic number.

It is an amenable number.

131821076 is a deficient number, since it is larger than the sum of its proper divisors (98865814).

131821076 is a wasteful number, since it uses less digits than its factorization.

131821076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32955273 (or 32955271 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 131821076 is about 11481.3359849801. The cubic root of 131821076 is about 508.9341780943.

The spelling of 131821076 in words is "one hundred thirty-one million, eight hundred twenty-one thousand, seventy-six".