1313123310 has 48 divisors (see below), whose sum is σ = 3447291744. Its totient is φ = 346764096.

The previous prime is 1313123309. The next prime is 1313123311. The reversal of 1313123310 is 133213131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1313123309) and next prime (1313123311).

It is a super-2 number, since 2×1313123310² = 3448585654530712200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313123311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61557 + ... + 80096.

It is an arithmetic number, because the mean of its divisors is an integer number (71818578).

Almost surely, 2^1313123310 is an apocalyptic number.

1313123310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1313123310 is an abundant number, since it is smaller than the sum of its proper divisors (2134168434).

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

1313123310 is a wasteful number, since it uses less digits than its factorization.

1313123310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141769 (or 141766 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 1313123310 is about 36237.0433396545. The cubic root of 1313123310 is about 1095.0530780551.

Adding to 1313123310 its reverse (133213131), we get a palindrome (1446336441).

The spelling of 1313123310 in words is "one billion, three hundred thirteen million, one hundred twenty-three thousand, three hundred ten".