30253131 has 6 divisors (see below), whose sum is σ = 43698980. Its totient is φ = 20168748.

The previous prime is 30253127. The next prime is 30253163. The reversal of 30253131 is 13135203.

It is not a de Polignac number, because 30253131 - 2² = 30253127 is a prime.

It is a super-2 number, since 2×30253131² = 1830503870606322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30253031) 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, 1680721 + ... + 1680738.

Almost surely, 2^30253131 is an apocalyptic number.

30253131 is a deficient number, since it is larger than the sum of its proper divisors (13445849).

30253131 is a wasteful number, since it uses less digits than its factorization.

30253131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3361465 (or 3361462 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 30253131 is about 5500.2846289988. The cubic root of 30253131 is about 311.5947339243.

Adding to 30253131 its reverse (13135203), we get a palindrome (43388334).

The spelling of 30253131 in words is "thirty million, two hundred fifty-three thousand, one hundred thirty-one".