201523353315531 has 32 divisors (see below), whose sum is σ = 292015998351168. Its totient is φ = 122883976005120.

The previous prime is 201523353315517. The next prime is 201523353315539. The reversal of 201523353315531 is 135513353325102.

It is not a de Polignac number, because 201523353315531 - 2¹⁵ = 201523353282763 is a prime.

It is a super-2 number, since 2×201523353315531² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201523353315539) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49576116 + ... + 53486801.

It is an arithmetic number, because the mean of its divisors is an integer number (9125499948474).

Almost surely, 2^{201523353315531} is an apocalyptic number.

201523353315531 is a deficient number, since it is larger than the sum of its proper divisors (90492645035637).

201523353315531 is a wasteful number, since it uses less digits than its factorization.

201523353315531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103063391.

The product of its (nonzero) digits is 607500, while the sum is 42.

The spelling of 201523353315531 in words is "two hundred one trillion, five hundred twenty-three billion, three hundred fifty-three million, three hundred fifteen thousand, five hundred thirty-one".