30470031 has 6 divisors (see below), whose sum is σ = 44012280. Its totient is φ = 20313348.

The previous prime is 30470023. The next prime is 30470131. The reversal of 30470031 is 13007403.

It is not a de Polignac number, because 30470031 - 2³ = 30470023 is a prime.

It is a super-2 number, since 2×30470031² = 1856845578281922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30469986 and 30470013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30470021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1692771 + ... + 1692788.

It is an arithmetic number, because the mean of its divisors is an integer number (7335380).

Almost surely, 2^30470031 is an apocalyptic number.

30470031 is a deficient number, since it is larger than the sum of its proper divisors (13542249).

30470031 is a wasteful number, since it uses less digits than its factorization.

30470031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3385565 (or 3385562 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 30470031 is about 5519.9665759858. The cubic root of 30470031 is about 312.3376214542.

Adding to 30470031 its reverse (13007403), we get a palindrome (43477434).

The spelling of 30470031 in words is "thirty million, four hundred seventy thousand, thirty-one".