31540320414212 has 24 divisors (see below), whose sum is σ = 56687578466904. Its totient is φ = 15343873120512.

The previous prime is 31540320414191. The next prime is 31540320414257. The reversal of 31540320414212 is 21241402304513.

It can be written as a sum of positive squares in 4 ways, for example, as 18125505848836 + 13414814565376 = 4257406^2 + 3662624^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65135858 + ... + 65618294.

It is an arithmetic number, because the mean of its divisors is an integer number (2361982436121).

Almost surely, 2^{31540320414212} is an apocalyptic number.

It is an amenable number.

31540320414212 is a deficient number, since it is larger than the sum of its proper divisors (25147258052692).

31540320414212 is a wasteful number, since it uses less digits than its factorization.

31540320414212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924215 (or 924213 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 31540320414212 its reverse (21241402304513), we get a palindrome (52781722718725).

The spelling of 31540320414212 in words is "thirty-one trillion, five hundred forty billion, three hundred twenty million, four hundred fourteen thousand, two hundred twelve".