103203213457 has 4 divisors (see below), whose sum is σ = 103204705716. Its totient is φ = 103201721200.

The previous prime is 103203213439. The next prime is 103203213461. The reversal of 103203213457 is 754312302301.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24618865216 + 78584348241 = 156904^2 + 280329^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103203213457 is a prime.

It is a super-2 number, since 2×103203213457² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103203213857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 637078 + ... + 782479.

It is an arithmetic number, because the mean of its divisors is an integer number (25801176429).

Almost surely, 2^103203213457 is an apocalyptic number.

It is an amenable number.

103203213457 is a deficient number, since it is larger than the sum of its proper divisors (1492259).

103203213457 is an equidigital number, since it uses as much as digits as its factorization.

103203213457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1492258.

The product of its (nonzero) digits is 15120, while the sum is 31.

Adding to 103203213457 its reverse (754312302301), we get a palindrome (857515515758).

The spelling of 103203213457 in words is "one hundred three billion, two hundred three million, two hundred thirteen thousand, four hundred fifty-seven".