31240343011126 has 32 divisors (see below), whose sum is σ = 47527582602240. Its totient is φ = 15398044743744.

The previous prime is 31240343011121. The next prime is 31240343011151. The reversal of 31240343011126 is 62111034304213.

It is a super-2 number, since 2×31240343011126² (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 (31240343011121) 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, 3214352895 + ... + 3214362613.

It is an arithmetic number, because the mean of its divisors is an integer number (1485236956320).

Almost surely, 2^{31240343011126} is an apocalyptic number.

31240343011126 is a deficient number, since it is larger than the sum of its proper divisors (16287239591114).

31240343011126 is a wasteful number, since it uses less digits than its factorization.

31240343011126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19180.

The product of its (nonzero) digits is 10368, while the sum is 31.

Adding to 31240343011126 its reverse (62111034304213), we get a palindrome (93351377315339).

The spelling of 31240343011126 in words is "thirty-one trillion, two hundred forty billion, three hundred forty-three million, eleven thousand, one hundred twenty-six".