30431394 has 48 divisors (see below), whose sum is σ = 79792128. Its totient is φ = 8182656.

The previous prime is 30431371. The next prime is 30431417. The reversal of 30431394 is 49313403.

It is an interprime number because it is at equal distance from previous prime (30431371) and next prime (30431417).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4962 + ... + 9245.

It is an arithmetic number, because the mean of its divisors is an integer number (1662336).

Almost surely, 2^30431394 is an apocalyptic number.

30431394 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

30431394 is an abundant number, since it is smaller than the sum of its proper divisors (49360734).

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

30431394 is a wasteful number, since it uses less digits than its factorization.

30431394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14239 (or 14236 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 30431394 is about 5516.4657163804. The cubic root of 30431394 is about 312.2055474932.

Adding to 30431394 its reverse (49313403), we get a palindrome (79744797).

The spelling of 30431394 in words is "thirty million, four hundred thirty-one thousand, three hundred ninety-four".