103506430263721 has 3 divisors (see below), whose sum is σ = 103506440437533. Its totient is φ = 103506420089910.

The previous prime is 103506430263703. The next prime is 103506430263727. The reversal of 103506430263721 is 127362034605301.

The square root of 103506430263721 is 10173811.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 103506430263721 - 2³³ = 103497840329129 is a prime.

It is a super-2 number, since 2×103506430263721² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103506430263727) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5086906 + ... + 15260716.

It is an arithmetic number, because the mean of its divisors is an integer number (34502146812511).

Almost surely, 2^{103506430263721} is an apocalyptic number.

103506430263721 is the 10173811-st square number.

103506430263721 is the 5086906-th centered octagonal number.

It is an amenable number.

103506430263721 is a deficient number, since it is larger than the sum of its proper divisors (10173812).

103506430263721 is an frugal number, since it uses more digits than its factorization.

103506430263721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20347622 (or 10173811 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 43.

The spelling of 103506430263721 in words is "one hundred three trillion, five hundred six billion, four hundred thirty million, two hundred sixty-three thousand, seven hundred twenty-one".