391043130 has 32 divisors (see below), whose sum is σ = 939026304. Its totient is φ = 104220096.

The previous prime is 391043113. The next prime is 391043131. The reversal of 391043130 is 31340193.

It is a self number, because there is not a number n which added to its sum of digits gives 391043130.

It is not an unprimeable number, because it can be changed into a prime (391043131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95587 + ... + 99593.

It is an arithmetic number, because the mean of its divisors is an integer number (29344572).

Almost surely, 2^391043130 is an apocalyptic number.

391043130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

391043130 is an abundant number, since it is smaller than the sum of its proper divisors (547983174).

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

391043130 is a wasteful number, since it uses less digits than its factorization.

391043130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7270.

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 391043130 is about 19774.8104921387. The cubic root of 391043130 is about 731.2651670461.

The spelling of 391043130 in words is "three hundred ninety-one million, forty-three thousand, one hundred thirty".