431121150140521 has 16 divisors (see below), whose sum is σ = 437866923455248. Its totient is φ = 424422789120000.

The previous prime is 431121150140489. The next prime is 431121150140533. The reversal of 431121150140521 is 125041051121134.

It can be written as a sum of positive squares in 8 ways, for example, as 49544423888400 + 381576726252121 = 7038780^2 + 19533989^2 .

It is a cyclic number.

It is not a de Polignac number, because 431121150140521 - 2⁵ = 431121150140489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (431121150140921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184193671 + ... + 186519571.

It is an arithmetic number, because the mean of its divisors is an integer number (27366682715953).

Almost surely, 2^{431121150140521} is an apocalyptic number.

It is an amenable number.

431121150140521 is a deficient number, since it is larger than the sum of its proper divisors (6745773314727).

431121150140521 is a wasteful number, since it uses less digits than its factorization.

431121150140521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2336092.

The product of its (nonzero) digits is 4800, while the sum is 31.

The spelling of 431121150140521 in words is "four hundred thirty-one trillion, one hundred twenty-one billion, one hundred fifty million, one hundred forty thousand, five hundred twenty-one".