2347387981 has 8 divisors (see below), whose sum is σ = 2450416320. Its totient is φ = 2244440352.

The previous prime is 2347387979. The next prime is 2347387993. The reversal of 2347387981 is 1897837432.

2347387981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2347387981 - 2¹ = 2347387979 is a prime.

It is a super-2 number, since 2×2347387981² = 11020460666686512722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2347387951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43590 + ... + 81208.

It is an arithmetic number, because the mean of its divisors is an integer number (306302040).

Almost surely, 2^2347387981 is an apocalyptic number.

It is an amenable number.

2347387981 is a deficient number, since it is larger than the sum of its proper divisors (103028339).

2347387981 is a wasteful number, since it uses less digits than its factorization.

2347387981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40355.

The product of its digits is 2032128, while the sum is 52.

The square root of 2347387981 is about 48449.8501648870. The cubic root of 2347387981 is about 1329.0101329303.

The spelling of 2347387981 in words is "two billion, three hundred forty-seven million, three hundred eighty-seven thousand, nine hundred eighty-one".