103005778531 has 6 divisors (see below), whose sum is σ = 109421363660. Its totient is φ = 96946614816.

The previous prime is 103005778517. The next prime is 103005778537. The reversal of 103005778531 is 135877500301.

It is not a de Polignac number, because 103005778531 - 2¹³ = 103005770339 is a prime.

It is a super-2 number, since 2×103005778531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103005778537) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 178210401 + ... + 178210978.

Almost surely, 2^103005778531 is an apocalyptic number.

103005778531 is a deficient number, since it is larger than the sum of its proper divisors (6415585129).

103005778531 is an equidigital number, since it uses as much as digits as its factorization.

103005778531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356421413 (or 356421396 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 40.

The spelling of 103005778531 in words is "one hundred three billion, five million, seven hundred seventy-eight thousand, five hundred thirty-one".