131021010 has 32 divisors (see below), whose sum is σ = 349390080. Its totient is φ = 34938864.

The previous prime is 131020997. The next prime is 131021021. The reversal of 131021010 is 10120131.

It is a super-2 number, since 2×131021010² = 34333010122840200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 131020983 and 131021001.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242362 + ... + 242901.

It is an arithmetic number, because the mean of its divisors is an integer number (10918440).

Almost surely, 2^131021010 is an apocalyptic number.

131021010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131021010 is an abundant number, since it is smaller than the sum of its proper divisors (218369070).

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

131021010 is a wasteful number, since it uses less digits than its factorization.

131021010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485279 (or 485273 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 131021010 is about 11446.4409315734. The cubic root of 131021010 is about 507.9024576601.

Adding to 131021010 its reverse (10120131), we get a palindrome (141141141).

The spelling of 131021010 in words is "one hundred thirty-one million, twenty-one thousand, ten".