31432205401 has 2 divisors, whose sum is σ = 31432205402. Its totient is φ = 31432205400.

The previous prime is 31432205393. The next prime is 31432205411. The reversal of 31432205401 is 10450223413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31417917001 + 14288400 = 177251^2 + 3780^2 .

It is a cyclic number.

It is not a de Polignac number, because 31432205401 - 2³ = 31432205393 is a prime.

It is not a weakly prime, because it can be changed into another prime (31432205411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15716102700 + 15716102701.

It is an arithmetic number, because the mean of its divisors is an integer number (15716102701).

Almost surely, 2^31432205401 is an apocalyptic number.

It is an amenable number.

31432205401 is a deficient number, since it is larger than the sum of its proper divisors (1).

31432205401 is an equidigital number, since it uses as much as digits as its factorization.

31432205401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 31432205401 its reverse (10450223413), we get a palindrome (41882428814).

The spelling of 31432205401 in words is "thirty-one billion, four hundred thirty-two million, two hundred five thousand, four hundred one".