2381430981 has 8 divisors (see below), whose sum is σ = 3193596000. Its totient is φ = 1578443312.

The previous prime is 2381430979. The next prime is 2381431007. The reversal of 2381430981 is 1890341832.

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 2381430981 - 2¹ = 2381430979 is a prime.

It is a super-2 number, since 2×2381430981² = 11342427034533244722, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2381430901) 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, 2293731 + ... + 2294768.

It is an arithmetic number, because the mean of its divisors is an integer number (399199500).

Almost surely, 2^2381430981 is an apocalyptic number.

It is an amenable number.

2381430981 is a deficient number, since it is larger than the sum of its proper divisors (812165019).

2381430981 is a wasteful number, since it uses less digits than its factorization.

2381430981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4588675.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 2381430981 is about 48799.9075921256. The cubic root of 2381430981 is about 1335.4039804771.

The spelling of 2381430981 in words is "two billion, three hundred eighty-one million, four hundred thirty thousand, nine hundred eighty-one".