31211110311423 has 12 divisors (see below), whose sum is σ = 48409069054680. Its totient is φ = 17834920177872.

The previous prime is 31211110311323. The next prime is 31211110311523. The reversal of 31211110311423 is 32411301111213.

It is an interprime number because it is at equal distance from previous prime (31211110311323) and next prime (31211110311523).

It is not a de Polignac number, because 31211110311423 - 2¹³ = 31211110303231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31211110311393 and 31211110311402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31211110311323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106160239008 + ... + 106160239301.

It is an arithmetic number, because the mean of its divisors is an integer number (4034089087890).

Almost surely, 2^{31211110311423} is an apocalyptic number.

31211110311423 is a deficient number, since it is larger than the sum of its proper divisors (17197958743257).

31211110311423 is a wasteful number, since it uses less digits than its factorization.

31211110311423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212320478326 (or 212320478319 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

Adding to 31211110311423 its reverse (32411301111213), we get a palindrome (63622411422636).

The spelling of 31211110311423 in words is "thirty-one trillion, two hundred eleven billion, one hundred ten million, three hundred eleven thousand, four hundred twenty-three".