231533420255533 has 32 divisors (see below), whose sum is σ = 266414711980032. Its totient is φ = 199275840379200.

The previous prime is 231533420255531. The next prime is 231533420255549. The reversal of 231533420255533 is 335552024335132.

It is a cyclic number.

It is not a de Polignac number, because 231533420255533 - 2¹ = 231533420255531 is a prime.

It is a super-2 number, since 2×231533420255533² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231533420255531) 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, 12188341 + ... + 24731002.

It is an arithmetic number, because the mean of its divisors is an integer number (8325459749376).

Almost surely, 2^{231533420255533} is an apocalyptic number.

It is an amenable number.

231533420255533 is a deficient number, since it is larger than the sum of its proper divisors (34881291724499).

231533420255533 is a wasteful number, since it uses less digits than its factorization.

231533420255533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36919785.

The product of its (nonzero) digits is 4860000, while the sum is 46.

The spelling of 231533420255533 in words is "two hundred thirty-one trillion, five hundred thirty-three billion, four hundred twenty million, two hundred fifty-five thousand, five hundred thirty-three".