1316242730 has 32 divisors (see below), whose sum is σ = 2621040768. Its totient is φ = 471889600.

The previous prime is 1316242729. The next prime is 1316242787. The reversal of 1316242730 is 372426131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1316242693 and 1316242702.

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, 76457 + ... + 92076.

It is an arithmetic number, because the mean of its divisors is an integer number (81907524).

Almost surely, 2^1316242730 is an apocalyptic number.

1316242730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1316242730 is a deficient number, since it is larger than the sum of its proper divisors (1304798038).

1316242730 is a wasteful number, since it uses less digits than its factorization.

1316242730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168622.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 1316242730 is about 36280.0596747029. The cubic root of 1316242730 is about 1095.9195184167.

Adding to 1316242730 its reverse (372426131), we get a palindrome (1688668861).

The spelling of 1316242730 in words is "one billion, three hundred sixteen million, two hundred forty-two thousand, seven hundred thirty".