1313202231 has 36 divisors (see below), whose sum is σ = 2129408736. Its totient is φ = 778916160.

The previous prime is 1313202229. The next prime is 1313202257. The reversal of 1313202231 is 1322023131.

It is not a de Polignac number, because 1313202231 - 2¹ = 1313202229 is a prime.

It is a super-2 number, since 2×1313202231² = 3449000199006754722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313202731) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 38355 + ... + 64011.

Almost surely, 2^1313202231 is an apocalyptic number.

1313202231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1313202231 is a deficient number, since it is larger than the sum of its proper divisors (816206505).

1313202231 is a wasteful number, since it uses less digits than its factorization.

1313202231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25732 (or 25718 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1313202231 is about 36238.1322780300. The cubic root of 1313202231 is about 1095.0750158153.

Adding to 1313202231 its reverse (1322023131), we get a palindrome (2635225362).

Subtracting 1313202231 from its reverse (1322023131), we obtain a square (8820900 = 2970²).

The spelling of 1313202231 in words is "one billion, three hundred thirteen million, two hundred two thousand, two hundred thirty-one".