30131342031 has 16 divisors (see below), whose sum is σ = 45921211904. Its totient is φ = 17215365024.

The previous prime is 30131342023. The next prime is 30131342057. The reversal of 30131342031 is 13024313103.

It is not a de Polignac number, because 30131342031 - 2³ = 30131342023 is a prime.

It is a super-2 number, since 2×30131342031² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30131341989 and 30131342007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30131342231) 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, 44406 + ... + 249468.

It is an arithmetic number, because the mean of its divisors is an integer number (2870075744).

Almost surely, 2^30131342031 is an apocalyptic number.

30131342031 is a deficient number, since it is larger than the sum of its proper divisors (15789869873).

30131342031 is a wasteful number, since it uses less digits than its factorization.

30131342031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212070.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 30131342031 its reverse (13024313103), we get a palindrome (43155655134).

The spelling of 30131342031 in words is "thirty billion, one hundred thirty-one million, three hundred forty-two thousand, thirty-one".