102023131551 has 32 divisors (see below), whose sum is σ = 153690739200. Its totient is φ = 59631492480.

The previous prime is 102023131541. The next prime is 102023131571. The reversal of 102023131551 is 155131320201.

It is not a de Polignac number, because 102023131551 - 2⁶ = 102023131487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102023131531) 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, 778510 + ... + 900068.

It is an arithmetic number, because the mean of its divisors is an integer number (4802835600).

Almost surely, 2^102023131551 is an apocalyptic number.

102023131551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

102023131551 is a deficient number, since it is larger than the sum of its proper divisors (51667607649).

102023131551 is a wasteful number, since it uses less digits than its factorization.

102023131551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122479.

The product of its (nonzero) digits is 900, while the sum is 24.

Adding to 102023131551 its reverse (155131320201), we get a palindrome (257154451752).

The spelling of 102023131551 in words is "one hundred two billion, twenty-three million, one hundred thirty-one thousand, five hundred fifty-one".