1351023540 has 48 divisors (see below), whose sum is σ = 3784704000. Its totient is φ = 360097920.

The previous prime is 1351023523. The next prime is 1351023559. The reversal of 1351023540 is 453201531.

1351023540 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 1351023540.

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, 160845 + ... + 169035.

It is an arithmetic number, because the mean of its divisors is an integer number (78848000).

Almost surely, 2^1351023540 is an apocalyptic number.

1351023540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1351023540 is an abundant number, since it is smaller than the sum of its proper divisors (2433680460).

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

1351023540 is a wasteful number, since it uses less digits than its factorization.

1351023540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10952 (or 10950 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 1351023540 is about 36756.2721178304. The cubic root of 1351023540 is about 1105.4886941132.

The spelling of 1351023540 in words is "one billion, three hundred fifty-one million, twenty-three thousand, five hundred forty".