30131292 has 12 divisors (see below), whose sum is σ = 70306376. Its totient is φ = 10043760.

The previous prime is 30131291. The next prime is 30131303. The reversal of 30131292 is 29213103.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30131291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1255459 + ... + 1255482.

Almost surely, 2^30131292 is an apocalyptic number.

It is an amenable number.

30131292 is an abundant number, since it is smaller than the sum of its proper divisors (40175084).

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

30131292 is a wasteful number, since it uses less digits than its factorization.

30131292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2510948 (or 2510946 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 30131292 is about 5489.1977555923. The cubic root of 30131292 is about 311.1758740270.

Adding to 30131292 its reverse (29213103), we get a palindrome (59344395).

The spelling of 30131292 in words is "thirty million, one hundred thirty-one thousand, two hundred ninety-two".