102497783531 has 8 divisors (see below), whose sum is σ = 120416976624. Its totient is φ = 86012125920.

The previous prime is 102497783491. The next prime is 102497783537. The reversal of 102497783531 is 135387794201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102497783531 is a prime.

It is a super-2 number, since 2×102497783531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102497783531.

It is not an unprimeable number, because it can be changed into a prime (102497783537) 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, 358383716 + ... + 358384001.

It is an arithmetic number, because the mean of its divisors is an integer number (15052122078).

Almost surely, 2^102497783531 is an apocalyptic number.

102497783531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

102497783531 is a deficient number, since it is larger than the sum of its proper divisors (17919193093).

102497783531 is a wasteful number, since it uses less digits than its factorization.

102497783531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716767741.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The spelling of 102497783531 in words is "one hundred two billion, four hundred ninety-seven million, seven hundred eighty-three thousand, five hundred thirty-one".