31400013233 has 4 divisors (see below), whose sum is σ = 32482772340. Its totient is φ = 30317254128.

The previous prime is 31400013223. The next prime is 31400013277. The reversal of 31400013233 is 33231000413.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11891466304 + 19508546929 = 109048^2 + 139673^2 .

It is a cyclic number.

It is not a de Polignac number, because 31400013233 - 2¹⁰ = 31400012209 is a prime.

It is a super-2 number, since 2×31400013233² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31400013223) 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, 541379510 + ... + 541379567.

It is an arithmetic number, because the mean of its divisors is an integer number (8120693085).

Almost surely, 2^31400013233 is an apocalyptic number.

It is an amenable number.

31400013233 is a deficient number, since it is larger than the sum of its proper divisors (1082759107).

31400013233 is a wasteful number, since it uses less digits than its factorization.

31400013233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082759106.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 31400013233 its reverse (33231000413), we get a palindrome (64631013646).

The spelling of 31400013233 in words is "thirty-one billion, four hundred million, thirteen thousand, two hundred thirty-three".