312223422422402 has 48 divisors (see below), whose sum is σ = 507514303811592. Its totient is φ = 143558260285440.

The previous prime is 312223422422399. The next prime is 312223422422413. The reversal of 312223422422402 is 204224224322213.

It can be written as a sum of positive squares in 12 ways, for example, as 155095166745841 + 157128255676561 = 12453721^2 + 12535081^2 .

It is a super-2 number, since 2×312223422422402² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16234478 + ... + 29799414.

Almost surely, 2^{312223422422402} is an apocalyptic number.

312223422422402 is a deficient number, since it is larger than the sum of its proper divisors (195290881389190).

312223422422402 is a wasteful number, since it uses less digits than its factorization.

312223422422402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13565303 (or 13565250 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 35.

Adding to 312223422422402 its reverse (204224224322213), we get a palindrome (516447646744615).

The spelling of 312223422422402 in words is "three hundred twelve trillion, two hundred twenty-three billion, four hundred twenty-two million, four hundred twenty-two thousand, four hundred two".