321431610061025 has 12 divisors (see below), whose sum is σ = 398575850938092. Its totient is φ = 257144865815040.

The previous prime is 321431610061019. The next prime is 321431610061069. The reversal of 321431610061025 is 520160016134123.

It can be written as a sum of positive squares in 6 ways, for example, as 142185997127329 + 179245612933696 = 11924177^2 + 13388264^2 .

It is not a de Polignac number, because 321431610061025 - 2¹⁸ = 321431609798881 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5449817 + ... + 25933833.

It is an arithmetic number, because the mean of its divisors is an integer number (33214654244841).

Almost surely, 2^{321431610061025} is an apocalyptic number.

It is an amenable number.

321431610061025 is a deficient number, since it is larger than the sum of its proper divisors (77144240877067).

321431610061025 is a wasteful number, since it uses less digits than its factorization.

321431610061025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21111700 (or 21111695 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

Adding to 321431610061025 its reverse (520160016134123), we get a palindrome (841591626195148).

The spelling of 321431610061025 in words is "three hundred twenty-one trillion, four hundred thirty-one billion, six hundred ten million, sixty-one thousand, twenty-five".