1315229977 has 8 divisors (see below), whose sum is σ = 1341750536. Its totient is φ = 1288939392.

The previous prime is 1315229941. The next prime is 1315229987. The reversal of 1315229977 is 7799225131.

It can be written as a sum of positive squares in 4 ways, for example, as 171505216 + 1143724761 = 13096^2 + 33819^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1315229977 - 2⁷ = 1315229849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1315229987) 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, 45918 + ... + 68839.

It is an arithmetic number, because the mean of its divisors is an integer number (167718817).

Almost surely, 2^1315229977 is an apocalyptic number.

It is an amenable number.

1315229977 is a deficient number, since it is larger than the sum of its proper divisors (26520559).

1315229977 is a wasteful number, since it uses less digits than its factorization.

1315229977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114987.

The product of its digits is 238140, while the sum is 46.

The square root of 1315229977 is about 36266.0995559214. The cubic root of 1315229977 is about 1095.6383695227.

The spelling of 1315229977 in words is "one billion, three hundred fifteen million, two hundred twenty-nine thousand, nine hundred seventy-seven".