1311023310 has 32 divisors (see below), whose sum is σ = 3147554592. Its totient is φ = 349484160.

The previous prime is 1311023309. The next prime is 1311023321. The reversal of 1311023310 is 133201131.

It is a super-2 number, since 2×1311023310² = 3437564238726712200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1311023310.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108912 + ... + 120348.

It is an arithmetic number, because the mean of its divisors is an integer number (98361081).

Almost surely, 2^1311023310 is an apocalyptic number.

1311023310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1311023310 is an abundant number, since it is smaller than the sum of its proper divisors (1836531282).

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

1311023310 is a wasteful number, since it uses less digits than its factorization.

1311023310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15268.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1311023310 is about 36208.0558715875. The cubic root of 1311023310 is about 1094.4690155090.

Adding to 1311023310 its reverse (133201131), we get a palindrome (1444224441).

The spelling of 1311023310 in words is "one billion, three hundred eleven million, twenty-three thousand, three hundred ten".