31235434421045 has 16 divisors (see below), whose sum is σ = 38481263453952. Its totient is φ = 24329717580480.

The previous prime is 31235434420999. The next prime is 31235434421057. The reversal of 31235434421045 is 54012443453213.

It is not a de Polignac number, because 31235434421045 - 2²⁶ = 31235367312181 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31235434420993 and 31235434421011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 449849117 + ... + 449918546.

It is an arithmetic number, because the mean of its divisors is an integer number (2405078965872).

Almost surely, 2^{31235434421045} is an apocalyptic number.

It is an amenable number.

31235434421045 is a deficient number, since it is larger than the sum of its proper divisors (7245829032907).

31235434421045 is a wasteful number, since it uses less digits than its factorization.

31235434421045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899767852.

The product of its (nonzero) digits is 691200, while the sum is 41.

Adding to 31235434421045 its reverse (54012443453213), we get a palindrome (85247877874258).

The spelling of 31235434421045 in words is "thirty-one trillion, two hundred thirty-five billion, four hundred thirty-four million, four hundred twenty-one thousand, forty-five".