31212001331153 has 4 divisors (see below), whose sum is σ = 31313669088240. Its totient is φ = 31110333574068.

The previous prime is 31212001331107. The next prime is 31212001331233. The reversal of 31212001331153 is 35113310021213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31212001331153 - 2⁶ = 31212001331089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31212001333153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50833878083 + ... + 50833878696.

It is an arithmetic number, because the mean of its divisors is an integer number (7828417272060).

Almost surely, 2^{31212001331153} is an apocalyptic number.

It is an amenable number.

31212001331153 is a deficient number, since it is larger than the sum of its proper divisors (101667757087).

31212001331153 is a wasteful number, since it uses less digits than its factorization.

31212001331153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101667757086.

The product of its (nonzero) digits is 1620, while the sum is 26.

Adding to 31212001331153 its reverse (35113310021213), we get a palindrome (66325311352366).

The spelling of 31212001331153 in words is "thirty-one trillion, two hundred twelve billion, one million, three hundred thirty-one thousand, one hundred fifty-three".