1315123040 has 96 divisors (see below), whose sum is σ = 3873671424. Its totient is φ = 409904640.

The previous prime is 1315122979. The next prime is 1315123087. The reversal of 1315123040 is 403215131.

It is a super-2 number, since 2×1315123040² = 3459097220677683200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 41054 + ... + 65693.

It is an arithmetic number, because the mean of its divisors is an integer number (40350744).

Almost surely, 2^1315123040 is an apocalyptic number.

1315123040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1315123040 is an abundant number, since it is smaller than the sum of its proper divisors (2558548384).

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

1315123040 is a wasteful number, since it uses less digits than its factorization.

1315123040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106780 (or 106772 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1315123040 is about 36264.6251876398. The cubic root of 1315123040 is about 1095.6086744737.

Adding to 1315123040 its reverse (403215131), we get a palindrome (1718338171).

The spelling of 1315123040 in words is "one billion, three hundred fifteen million, one hundred twenty-three thousand, forty".