1301311992 has 16 divisors (see below), whose sum is σ = 3253280040. Its totient is φ = 433770656.

The previous prime is 1301311981. The next prime is 1301311993. The reversal of 1301311992 is 2991131031.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1301311993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27110643 + ... + 27110690.

Almost surely, 2^1301311992 is an apocalyptic number.

1301311992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1301311992 is an abundant number, since it is smaller than the sum of its proper divisors (1951968048).

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

1301311992 is a wasteful number, since it uses less digits than its factorization.

1301311992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54221342 (or 54221338 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 30.

The square root of 1301311992 is about 36073.7022219788. The cubic root of 1301311992 is about 1091.7599131377.

The spelling of 1301311992 in words is "one billion, three hundred one million, three hundred eleven thousand, nine hundred ninety-two".