31301233232113 has 8 divisors (see below), whose sum is σ = 34007330320488. Its totient is φ = 28637751846144.

The previous prime is 31301233232107. The next prime is 31301233232201. The reversal of 31301233232113 is 31123233210313.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1031947159104 + 30269286073009 = 1015848^2 + 5501753^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31301233232113 - 2²¹ = 31301231134961 is a prime.

It is a super-2 number, since 2×31301233232113² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31301233232413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10653924070 + ... + 10653927007.

It is an arithmetic number, because the mean of its divisors is an integer number (4250916290061).

Almost surely, 2^{31301233232113} is an apocalyptic number.

It is an amenable number.

31301233232113 is a deficient number, since it is larger than the sum of its proper divisors (2706097088375).

31301233232113 is a wasteful number, since it uses less digits than its factorization.

31301233232113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21307851203.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 31301233232113 its reverse (31123233210313), we get a palindrome (62424466442426).

The spelling of 31301233232113 in words is "thirty-one trillion, three hundred one billion, two hundred thirty-three million, two hundred thirty-two thousand, one hundred thirteen".