31425320102101 has 4 divisors (see below), whose sum is σ = 31588145595052. Its totient is φ = 31262494609152.

The previous prime is 31425320102069. The next prime is 31425320102129. The reversal of 31425320102101 is 10120102352413.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2293922284900 + 29131397817201 = 1514570^2 + 5397351^2 .

It is a cyclic number.

It is not a de Polignac number, because 31425320102101 - 2⁵ = 31425320102069 is a prime.

It is a super-2 number, since 2×31425320102101² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31425320102191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81412746186 + ... + 81412746571.

It is an arithmetic number, because the mean of its divisors is an integer number (7897036398763).

Almost surely, 2^{31425320102101} is an apocalyptic number.

It is an amenable number.

31425320102101 is a deficient number, since it is larger than the sum of its proper divisors (162825492951).

31425320102101 is a wasteful number, since it uses less digits than its factorization.

31425320102101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162825492950.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 31425320102101 its reverse (10120102352413), we get a palindrome (41545422454514).

The spelling of 31425320102101 in words is "thirty-one trillion, four hundred twenty-five billion, three hundred twenty million, one hundred two thousand, one hundred one".