31033230012213 has 32 divisors (see below), whose sum is σ = 48866003730432. Its totient is φ = 17270350929600.

The previous prime is 31033230012173. The next prime is 31033230012223. The reversal of 31033230012213 is 31221003233013.

It is not a de Polignac number, because 31033230012213 - 2¹⁸ = 31033229750069 is a prime.

It is a super-2 number, since 2×31033230012213² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31033230012223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 189285945 + ... + 189449822.

It is an arithmetic number, because the mean of its divisors is an integer number (1527062616576).

Almost surely, 2^{31033230012213} is an apocalyptic number.

31033230012213 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

31033230012213 is a deficient number, since it is larger than the sum of its proper divisors (17832773718219).

31033230012213 is a wasteful number, since it uses less digits than its factorization.

31033230012213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378735985.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 31033230012213 its reverse (31221003233013), we get a palindrome (62254233245226).

The spelling of 31033230012213 in words is "thirty-one trillion, thirty-three billion, two hundred thirty million, twelve thousand, two hundred thirteen".