31223432455351 has 32 divisors (see below), whose sum is σ = 33129547411968. Its totient is φ = 29366676662400.

The previous prime is 31223432455333. The next prime is 31223432455357. The reversal of 31223432455351 is 15355423432213.

It is not a de Polignac number, because 31223432455351 - 2⁴³ = 22427339433143 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31223432455298 and 31223432455307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31223432455357) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 479582701 + ... + 479647801.

It is an arithmetic number, because the mean of its divisors is an integer number (1035298356624).

Almost surely, 2^{31223432455351} is an apocalyptic number.

31223432455351 is a deficient number, since it is larger than the sum of its proper divisors (1906114956617).

31223432455351 is a wasteful number, since it uses less digits than its factorization.

31223432455351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66391.

The product of its digits is 1296000, while the sum is 43.

Adding to 31223432455351 its reverse (15355423432213), we get a palindrome (46578855887564).

The spelling of 31223432455351 in words is "thirty-one trillion, two hundred twenty-three billion, four hundred thirty-two million, four hundred fifty-five thousand, three hundred fifty-one".