30121430031 has 24 divisors (see below), whose sum is σ = 54244654464. Its totient is φ = 15647495760.

The previous prime is 30121429979. The next prime is 30121430033. The reversal of 30121430031 is 13003412103.

It is not a de Polignac number, because 30121430031 - 2⁶ = 30121429967 is a prime.

It is a super-2 number, since 2×30121430031² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30121429986 and 30121430013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30121430033) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21731941 + ... + 21733326.

It is an arithmetic number, because the mean of its divisors is an integer number (2260193936).

Almost surely, 2^30121430031 is an apocalyptic number.

30121430031 is a deficient number, since it is larger than the sum of its proper divisors (24123224433).

30121430031 is a wasteful number, since it uses less digits than its factorization.

30121430031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43465291 (or 43465288 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 30121430031 its reverse (13003412103), we get a palindrome (43124842134).

The spelling of 30121430031 in words is "thirty billion, one hundred twenty-one million, four hundred thirty thousand, thirty-one".