30212112131 has 4 divisors (see below), whose sum is σ = 30505433712. Its totient is φ = 29918790552.

The previous prime is 30212112107. The next prime is 30212112143. The reversal of 30212112131 is 13121121203.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30212112131 - 2⁶ = 30212112067 is a prime.

It is a super-2 number, since 2×30212112131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30212112331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146660636 + ... + 146660841.

It is an arithmetic number, because the mean of its divisors is an integer number (7626358428).

Almost surely, 2^30212112131 is an apocalyptic number.

30212112131 is a deficient number, since it is larger than the sum of its proper divisors (293321581).

30212112131 is a wasteful number, since it uses less digits than its factorization.

30212112131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293321580.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 30212112131 its reverse (13121121203), we get a palindrome (43333233334).

The spelling of 30212112131 in words is "thirty billion, two hundred twelve million, one hundred twelve thousand, one hundred thirty-one".