30131011031 has 4 divisors (see below), whose sum is σ = 32870193864. Its totient is φ = 27391828200.

The previous prime is 30131011003. The next prime is 30131011039. The reversal of 30131011031 is 13011013103.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-30131011031 is a prime.

It is a super-2 number, since 2×30131011031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30131010997 and 30131011015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30131011039) 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, 1369591400 + ... + 1369591421.

It is an arithmetic number, because the mean of its divisors is an integer number (8217548466).

Almost surely, 2^30131011031 is an apocalyptic number.

30131011031 is a deficient number, since it is larger than the sum of its proper divisors (2739182833).

30131011031 is a wasteful number, since it uses less digits than its factorization.

30131011031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2739182832.

The product of its (nonzero) digits is 27, while the sum is 14.

Adding to 30131011031 its reverse (13011013103), we get a palindrome (43142024134).

The spelling of 30131011031 in words is "thirty billion, one hundred thirty-one million, eleven thousand, thirty-one".