81030374 has 8 divisors (see below), whose sum is σ = 122081688. Its totient is φ = 40336480.

The previous prime is 81030371. The next prime is 81030377. The reversal of 81030374 is 47303018.

It is an interprime number because it is at equal distance from previous prime (81030371) and next prime (81030377).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81030371) 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, 88787 + ... + 89694.

It is an arithmetic number, because the mean of its divisors is an integer number (15260211).

Almost surely, 2^81030374 is an apocalyptic number.

81030374 is a deficient number, since it is larger than the sum of its proper divisors (41051314).

81030374 is a wasteful number, since it uses less digits than its factorization.

81030374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178710.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 81030374 is about 9001.6872862814. The cubic root of 81030374 is about 432.7289469119.

The spelling of 81030374 in words is "eighty-one million, thirty thousand, three hundred seventy-four".