30120743031 has 16 divisors (see below), whose sum is σ = 41062416384. Its totient is φ = 19630760544.

The previous prime is 30120743017. The next prime is 30120743083. The reversal of 30120743031 is 13034702103.

It is not a de Polignac number, because 30120743031 - 2⁵ = 30120742999 is a prime.

It is a super-2 number, since 2×30120743031² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30120742992 and 30120743010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30120743231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1866 + ... + 245448.

It is an arithmetic number, because the mean of its divisors is an integer number (2566401024).

Almost surely, 2^30120743031 is an apocalyptic number.

30120743031 is a deficient number, since it is larger than the sum of its proper divisors (10941673353).

30120743031 is a wasteful number, since it uses less digits than its factorization.

30120743031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244510.

The product of its (nonzero) digits is 1512, while the sum is 24.

The spelling of 30120743031 in words is "thirty billion, one hundred twenty million, seven hundred forty-three thousand, thirty-one".