131021016 has 32 divisors (see below), whose sum is σ = 374346240. Its totient is φ = 37434528.

The previous prime is 131020997. The next prime is 131021021. The reversal of 131021016 is 610120131.

It is a junction number, because it is equal to n+sod(n) for n = 131020986 and 131021004.

It is a congruent number.

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, 389776 + ... + 390111.

It is an arithmetic number, because the mean of its divisors is an integer number (11698320).

Almost surely, 2^131021016 is an apocalyptic number.

It is an amenable number.

131021016 is an abundant number, since it is smaller than the sum of its proper divisors (243325224).

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

131021016 is a wasteful number, since it uses less digits than its factorization.

131021016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779903 (or 779899 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 131021016 is about 11446.4411936636. The cubic root of 131021016 is about 507.9024654131.

Adding to 131021016 its reverse (610120131), we get a palindrome (741141147).

The spelling of 131021016 in words is "one hundred thirty-one million, twenty-one thousand, sixteen".