20122536531 has 8 divisors (see below), whose sum is σ = 26839189440. Its totient is φ = 13410453992.

The previous prime is 20122536527. The next prime is 20122536541. The reversal of 20122536531 is 13563522102.

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

It is a cyclic number.

It is not a de Polignac number, because 20122536531 - 2² = 20122536527 is a prime.

It is a super-2 number, since 2×20122536531² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20122536541) 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, 1132305 + ... + 1149938.

It is an arithmetic number, because the mean of its divisors is an integer number (3354898680).

Almost surely, 2^20122536531 is an apocalyptic number.

20122536531 is a deficient number, since it is larger than the sum of its proper divisors (6716652909).

20122536531 is a wasteful number, since it uses less digits than its factorization.

20122536531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2285185.

The product of its (nonzero) digits is 10800, while the sum is 30.

The spelling of 20122536531 in words is "twenty billion, one hundred twenty-two million, five hundred thirty-six thousand, five hundred thirty-one".