1520020312 has 8 divisors (see below), whose sum is σ = 2850038100. Its totient is φ = 760010152.

The previous prime is 1520020309. The next prime is 1520020321. The reversal of 1520020312 is 2130200251.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95001262 + ... + 95001277.

Almost surely, 2^1520020312 is an apocalyptic number.

It is an amenable number.

1520020312 is a deficient number, since it is larger than the sum of its proper divisors (1330017788).

1520020312 is a wasteful number, since it uses less digits than its factorization.

1520020312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190002545 (or 190002541 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1520020312 is about 38987.4378742692. The cubic root of 1520020312 is about 1149.7845373274.

Adding to 1520020312 its reverse (2130200251), we get a palindrome (3650220563).

The spelling of 1520020312 in words is "one billion, five hundred twenty million, twenty thousand, three hundred twelve".