31425135133 has 8 divisors (see below), whose sum is σ = 36232267968. Its totient is φ = 26697459264.

The previous prime is 31425135113. The next prime is 31425135199. The reversal of 31425135133 is 33153152413.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31425135133 - 2²¹ = 31423037981 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31425135095 and 31425135104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31425135113) 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, 19863391 + ... + 19864972.

It is an arithmetic number, because the mean of its divisors is an integer number (4529033496).

Almost surely, 2^31425135133 is an apocalyptic number.

It is an amenable number.

31425135133 is a deficient number, since it is larger than the sum of its proper divisors (4807132835).

31425135133 is a wasteful number, since it uses less digits than its factorization.

31425135133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39728483.

The product of its digits is 16200, while the sum is 31.

Adding to 31425135133 its reverse (33153152413), we get a palindrome (64578287546).

The spelling of 31425135133 in words is "thirty-one billion, four hundred twenty-five million, one hundred thirty-five thousand, one hundred thirty-three".