30213311231031 has 4 divisors (see below), whose sum is σ = 40284414974712. Its totient is φ = 20142207487352.

The previous prime is 30213311231011. The next prime is 30213311231053. The reversal of 30213311231031 is 13013211331203.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30213311231031 is a prime.

It is a super-2 number, since 2×30213311231031² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30213311230992 and 30213311231010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30213311231011) 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, 5035551871836 + ... + 5035551871841.

It is an arithmetic number, because the mean of its divisors is an integer number (10071103743678).

Almost surely, 2^{30213311231031} is an apocalyptic number.

30213311231031 is a deficient number, since it is larger than the sum of its proper divisors (10071103743681).

30213311231031 is a wasteful number, since it uses less digits than its factorization.

30213311231031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10071103743680.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 30213311231031 its reverse (13013211331203), we get a palindrome (43226522562234).

The spelling of 30213311231031 in words is "thirty trillion, two hundred thirteen billion, three hundred eleven million, two hundred thirty-one thousand, thirty-one".