31211452523153 has 16 divisors (see below), whose sum is σ = 36910286666880. Its totient is φ = 25823134544256.

The previous prime is 31211452523117. The next prime is 31211452523161. The reversal of 31211452523153 is 35132525411213.

It is not a de Polignac number, because 31211452523153 - 2¹² = 31211452519057 is a prime.

It is a super-2 number, since 2×31211452523153² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31211452523453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20184275 + ... + 21675512.

It is an arithmetic number, because the mean of its divisors is an integer number (2306892916680).

Almost surely, 2^{31211452523153} is an apocalyptic number.

It is an amenable number.

31211452523153 is a deficient number, since it is larger than the sum of its proper divisors (5698834143727).

31211452523153 is a wasteful number, since it uses less digits than its factorization.

31211452523153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41863496.

The product of its digits is 108000, while the sum is 38.

Adding to 31211452523153 its reverse (35132525411213), we get a palindrome (66343977934366).

The spelling of 31211452523153 in words is "thirty-one trillion, two hundred eleven billion, four hundred fifty-two million, five hundred twenty-three thousand, one hundred fifty-three".