201323310235554 has 16 divisors (see below), whose sum is σ = 433619437430592. Its totient is φ = 61945633918608.

The previous prime is 201323310235529. The next prime is 201323310235601. The reversal of 201323310235554 is 455532013323102.

It is a super-2 number, since 2×201323310235554² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1290534039894 + ... + 1290534040049.

It is an arithmetic number, because the mean of its divisors is an integer number (27101214839412).

Almost surely, 2^{201323310235554} is an apocalyptic number.

201323310235554 is an abundant number, since it is smaller than the sum of its proper divisors (232296127195038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201323310235554 is a wasteful number, since it uses less digits than its factorization.

201323310235554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581068079961.

The product of its (nonzero) digits is 324000, while the sum is 39.

Adding to 201323310235554 its reverse (455532013323102), we get a palindrome (656855323558656).

The spelling of 201323310235554 in words is "two hundred one trillion, three hundred twenty-three billion, three hundred ten million, two hundred thirty-five thousand, five hundred fifty-four".