31113400205302 has 16 divisors (see below), whose sum is σ = 46677639749040. Its totient is φ = 15554187184032.

The previous prime is 31113400205299. The next prime is 31113400205333. The reversal of 31113400205302 is 20350200431113.

It is a happy number.

It is a super-2 number, since 2×31113400205302² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355444513 + ... + 355532035.

It is an arithmetic number, because the mean of its divisors is an integer number (2917352484315).

Almost surely, 2^{31113400205302} is an apocalyptic number.

31113400205302 is a deficient number, since it is larger than the sum of its proper divisors (15564239543738).

31113400205302 is a wasteful number, since it uses less digits than its factorization.

31113400205302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114207.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 31113400205302 its reverse (20350200431113), we get a palindrome (51463600636415).

The spelling of 31113400205302 in words is "thirty-one trillion, one hundred thirteen billion, four hundred million, two hundred five thousand, three hundred two".