30011021031 has 4 divisors (see below), whose sum is σ = 40014694712. Its totient is φ = 20007347352.

The previous prime is 30011020927. The next prime is 30011021039. The reversal of 30011021031 is 13012011003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13012011003 = 3 ⋅4337337001.

It is not a de Polignac number, because 30011021031 - 2⁹ = 30011020519 is a prime.

It is a super-2 number, since 2×30011021031² (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 = 30011020998 and 30011021016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30011021039) 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, 5001836836 + ... + 5001836841.

It is an arithmetic number, because the mean of its divisors is an integer number (10003673678).

Almost surely, 2^30011021031 is an apocalyptic number.

30011021031 is a deficient number, since it is larger than the sum of its proper divisors (10003673681).

30011021031 is a wasteful number, since it uses less digits than its factorization.

30011021031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10003673680.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 30011021031 its reverse (13012011003), we get a palindrome (43023032034).

The spelling of 30011021031 in words is "thirty billion, eleven million, twenty-one thousand, thirty-one".