1312023001020 has 24 divisors (see below), whose sum is σ = 3673664403024. Its totient is φ = 349872800256.

The previous prime is 1312023001019. The next prime is 1312023001027. The reversal of 1312023001020 is 201003202131.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312023001027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10933524949 + ... + 10933525068.

It is an arithmetic number, because the mean of its divisors is an integer number (153069350126).

Almost surely, 2^{1312023001020} is an apocalyptic number.

1312023001020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312023001020 is an abundant number, since it is smaller than the sum of its proper divisors (2361641402004).

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

1312023001020 is a wasteful number, since it uses less digits than its factorization.

1312023001020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21867050029 (or 21867050027 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 1312023001020 its reverse (201003202131), we get a palindrome (1513026203151).

The spelling of 1312023001020 in words is "one trillion, three hundred twelve billion, twenty-three million, one thousand, twenty".