1031131010 has 48 divisors (see below), whose sum is σ = 2325158136. Its totient is φ = 326333952.

The previous prime is 1031130977. The next prime is 1031131019. The reversal of 1031131010 is 101311301.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 414651769 + 616479241 = 20363^2 + 24829^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1031130982 and 1031131000.

It is not an unprimeable number, because it can be changed into a prime (1031131019) 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, 74567 + ... + 87306.

Almost surely, 2^1031131010 is an apocalyptic number.

1031131010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1031131010 is an abundant number, since it is smaller than the sum of its proper divisors (1294027126).

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

1031131010 is a wasteful number, since it uses less digits than its factorization.

1031131010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161907 (or 161900 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 11.

The square root of 1031131010 is about 32111.2287214301. The cubic root of 1031131010 is about 1010.2711457094.

Adding to 1031131010 its reverse (101311301), we get a palindrome (1132442311).

The spelling of 1031131010 in words is "one billion, thirty-one million, one hundred thirty-one thousand, ten".