131111010 has 24 divisors (see below), whose sum is σ = 340888860. Its totient is φ = 34962912.

The previous prime is 131110979. The next prime is 131111011. The reversal of 131111010 is 10111131.

It can be written as a sum of positive squares in 2 ways, for example, as 123276609 + 7834401 = 11103^2 + 2799^2 .

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 = 131110983 and 131111001.

It is not an unprimeable number, because it can be changed into a prime (131111011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 728305 + ... + 728484.

Almost surely, 2^131111010 is an apocalyptic number.

131111010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131111010 is an abundant number, since it is smaller than the sum of its proper divisors (209777850).

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

131111010 is a wasteful number, since it uses less digits than its factorization.

131111010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1456802 (or 1456799 counting only the distinct ones).

The product of its (nonzero) digits is 3, while the sum is 9.

The square root of 131111010 is about 11450.3716096902. The cubic root of 131111010 is about 508.0187259305.

Adding to 131111010 its reverse (10111131), we get a palindrome (141222141).

It can be divided in two parts, 1311 and 11010, that added together give a palindrome (12321).

The spelling of 131111010 in words is "one hundred thirty-one million, one hundred eleven thousand, ten".