103021531451 has 4 divisors (see below), whose sum is σ = 103022177904. Its totient is φ = 103020885000.

The previous prime is 103021531441. The next prime is 103021531469. The reversal of 103021531451 is 154135120301.

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 a cyclic number.

It is not a de Polignac number, because 103021531451 - 2¹⁴ = 103021515067 is a prime.

It is a super-2 number, since 2×103021531451² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 103021531451.

It is not an unprimeable number, because it can be changed into a prime (103021531441) 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, 104426 + ... + 465776.

It is an arithmetic number, because the mean of its divisors is an integer number (25755544476).

Almost surely, 2^103021531451 is an apocalyptic number.

103021531451 is a deficient number, since it is larger than the sum of its proper divisors (646453).

103021531451 is an equidigital number, since it uses as much as digits as its factorization.

103021531451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646452.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 103021531451 its reverse (154135120301), we get a palindrome (257156651752).

The spelling of 103021531451 in words is "one hundred three billion, twenty-one million, five hundred thirty-one thousand, four hundred fifty-one".