31420212123 has 8 divisors (see below), whose sum is σ = 42684061968. Its totient is φ = 20551585184.

The previous prime is 31420212059. The next prime is 31420212127. The reversal of 31420212123 is 32121202413.

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 31420212123 - 2⁶ = 31420212059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31420212123.

It is not an unprimeable number, because it can be changed into a prime (31420212127) 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, 98805540 + ... + 98805857.

It is an arithmetic number, because the mean of its divisors is an integer number (5335507746).

Almost surely, 2^31420212123 is an apocalyptic number.

31420212123 is a deficient number, since it is larger than the sum of its proper divisors (11263849845).

31420212123 is a wasteful number, since it uses less digits than its factorization.

31420212123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197611453.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 31420212123 its reverse (32121202413), we get a palindrome (63541414536).

The spelling of 31420212123 in words is "thirty-one billion, four hundred twenty million, two hundred twelve thousand, one hundred twenty-three".