1308630151981 has 4 divisors (see below), whose sum is σ = 1336473346752. Its totient is φ = 1280786957212.

The previous prime is 1308630151973. The next prime is 1308630151987. The reversal of 1308630151981 is 1891510368031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1308630151981 - 2³ = 1308630151973 is a prime.

It is a super-2 number, since 2×1308630151981² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1308630151987) 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, 13921597315 + ... + 13921597408.

It is an arithmetic number, because the mean of its divisors is an integer number (334118336688).

Almost surely, 2^{1308630151981} is an apocalyptic number.

It is an amenable number.

1308630151981 is a deficient number, since it is larger than the sum of its proper divisors (27843194771).

1308630151981 is an equidigital number, since it uses as much as digits as its factorization.

1308630151981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27843194770.

The product of its (nonzero) digits is 155520, while the sum is 46.

The spelling of 1308630151981 in words is "one trillion, three hundred eight billion, six hundred thirty million, one hundred fifty-one thousand, nine hundred eighty-one".