19931130 has 32 divisors (see below), whose sum is σ = 53150400. Its totient is φ = 5314896.

The previous prime is 19931129. The next prime is 19931143. The reversal of 19931130 is 3113991.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 19931094 and 19931103.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36640 + ... + 37179.

It is an arithmetic number, because the mean of its divisors is an integer number (1660950).

Almost surely, 2^19931130 is an apocalyptic number.

19931130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19931130 is an abundant number, since it is smaller than the sum of its proper divisors (33219270).

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

19931130 is a wasteful number, since it uses less digits than its factorization.

19931130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73835 (or 73829 counting only the distinct ones).

The product of its (nonzero) digits is 729, while the sum is 27.

The square root of 19931130 is about 4464.4294148301. The cubic root of 19931130 is about 271.1298334413.

It can be divided in two parts, 199 and 31130, that added together give a square (31329 = 177²).

The spelling of 19931130 in words is "nineteen million, nine hundred thirty-one thousand, one hundred thirty".