203515213012 has 6 divisors (see below), whose sum is σ = 356151622778. Its totient is φ = 101757606504.

The previous prime is 203515212961. The next prime is 203515213039. The reversal of 203515213012 is 210312515302.

It can be written as a sum of positive squares in only one way, i.e., 203135898436 + 379314576 = 450706^2 + 19476^2 .

It is a super-2 number, since 2×203515213012² (a number of 23 digits) contains 22 as substring.

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, 25439401623 + ... + 25439401630.

Almost surely, 2^203515213012 is an apocalyptic number.

It is an amenable number.

203515213012 is a deficient number, since it is larger than the sum of its proper divisors (152636409766).

203515213012 is a wasteful number, since it uses less digits than its factorization.

203515213012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50878803257 (or 50878803255 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 203515213012 its reverse (210312515302), we get a palindrome (413827728314).

The spelling of 203515213012 in words is "two hundred three billion, five hundred fifteen million, two hundred thirteen thousand, twelve".