31425300133 has 4 divisors (see below), whose sum is σ = 31429510540. Its totient is φ = 31421089728.

The previous prime is 31425300121. The next prime is 31425300167. The reversal of 31425300133 is 33100352413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33100352413 = 409 ⋅80929957.

It can be written as a sum of positive squares in 2 ways, for example, as 26062227844 + 5363072289 = 161438^2 + 73233^2 .

It is a cyclic number.

It is not a de Polignac number, because 31425300133 - 2³³ = 22835365541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31425300098 and 31425300107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31425300233) 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, 2093988 + ... + 2108941.

It is an arithmetic number, because the mean of its divisors is an integer number (7857377635).

Almost surely, 2^31425300133 is an apocalyptic number.

It is an amenable number.

31425300133 is a deficient number, since it is larger than the sum of its proper divisors (4210407).

31425300133 is an equidigital number, since it uses as much as digits as its factorization.

31425300133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4210406.

The product of its (nonzero) digits is 3240, while the sum is 25.

Adding to 31425300133 its reverse (33100352413), we get a palindrome (64525652546).

The spelling of 31425300133 in words is "thirty-one billion, four hundred twenty-five million, three hundred thousand, one hundred thirty-three".