31000011120213 has 16 divisors (see below), whose sum is σ = 42759827726400. Its totient is φ = 19953474020480.

The previous prime is 31000011120173. The next prime is 31000011120223. The reversal of 31000011120213 is 31202111000013.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 31000011120213 - 2¹⁴ = 31000011103829 is a prime.

It is a super-2 number, since 2×31000011120213² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31000011120192 and 31000011120201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31000011120223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1814448 + ... + 8080361.

It is an arithmetic number, because the mean of its divisors is an integer number (2672489232900).

Almost surely, 2^{31000011120213} is an apocalyptic number.

It is an amenable number.

31000011120213 is a deficient number, since it is larger than the sum of its proper divisors (11759816606187).

31000011120213 is a wasteful number, since it uses less digits than its factorization.

31000011120213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9930852.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 31000011120213 its reverse (31202111000013), we get a palindrome (62202122120226).

The spelling of 31000011120213 in words is "thirty-one trillion, eleven million, one hundred twenty thousand, two hundred thirteen".