85103731404 has 24 divisors (see below), whose sum is σ = 220639303920. Its totient is φ = 28367910432.

The previous prime is 85103731403. The next prime is 85103731409. The reversal of 85103731404 is 40413730158.

It is a happy number.

85103731404 is a `hidden beast` number, since 85 + 103 + 73 + 1 + 404 = 666.

It is a super-2 number, since 2×85103731404² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (85103731403) 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, 393998649 + ... + 393998864.

It is an arithmetic number, because the mean of its divisors is an integer number (9193304330).

Almost surely, 2^85103731404 is an apocalyptic number.

It is an amenable number.

85103731404 is an abundant number, since it is smaller than the sum of its proper divisors (135535572516).

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

85103731404 is a wasteful number, since it uses less digits than its factorization.

85103731404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787997526 (or 787997518 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 85103731404 in words is "eighty-five billion, one hundred three million, seven hundred thirty-one thousand, four hundred four".