31201023313126 has 16 divisors (see below), whose sum is σ = 47443268632608. Its totient is φ = 15386605992000.

The previous prime is 31201023313123. The next prime is 31201023313139. The reversal of 31201023313126 is 62131332010213.

It is a junction number, because it is equal to n+sod(n) for n = 31201023313094 and 31201023313103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31201023313123) 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, 10210951 + ... + 12909901.

It is an arithmetic number, because the mean of its divisors is an integer number (2965204289538).

Almost surely, 2^{31201023313126} is an apocalyptic number.

31201023313126 is a deficient number, since it is larger than the sum of its proper divisors (16242245319482).

31201023313126 is a wasteful number, since it uses less digits than its factorization.

31201023313126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2778207.

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 31201023313126 its reverse (62131332010213), we get a palindrome (93332355323339).

The spelling of 31201023313126 in words is "thirty-one trillion, two hundred one billion, twenty-three million, three hundred thirteen thousand, one hundred twenty-six".