1316240145 has 128 divisors (see below), whose sum is σ = 2641766400. Its totient is φ = 616377600.

The previous prime is 1316240141. The next prime is 1316240173. The reversal of 1316240145 is 5410426131.

It is a happy number.

1316240145 is a `hidden beast` number, since 1 + 31 + 624 + 0 + 1 + 4 + 5 = 666.

It is not a de Polignac number, because 1316240145 - 2² = 1316240141 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (1316240141) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7271955 + ... + 7272135.

It is an arithmetic number, because the mean of its divisors is an integer number (20638800).

Almost surely, 2^1316240145 is an apocalyptic number.

1316240145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1316240145 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

1316240145 is a wasteful number, since it uses less digits than its factorization.

1316240145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348 (or 342 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1316240145 is about 36280.0240490549. The cubic root of 1316240145 is about 1095.9188009822.

Adding to 1316240145 its reverse (5410426131), we get a palindrome (6726666276).

The spelling of 1316240145 in words is "one billion, three hundred sixteen million, two hundred forty thousand, one hundred forty-five".