312154244645 has 8 divisors (see below), whose sum is σ = 374604073080. Its totient is φ = 249710742720.

The previous prime is 312154244641. The next prime is 312154244657. The reversal of 312154244645 is 546442451213.

It can be written as a sum of positive squares in 4 ways, for example, as 6006715009 + 306147529636 = 77503^2 + 553306^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 312154244645 - 2² = 312154244641 is a prime.

It is a super-2 number, since 2×312154244645² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312154244641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1472390 + ... + 1670999.

It is an arithmetic number, because the mean of its divisors is an integer number (46825509135).

Almost surely, 2^312154244645 is an apocalyptic number.

It is an amenable number.

312154244645 is a deficient number, since it is larger than the sum of its proper divisors (62449828435).

312154244645 is a wasteful number, since it uses less digits than its factorization.

312154244645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3163255.

The product of its digits is 460800, while the sum is 41.

Adding to 312154244645 its reverse (546442451213), we get a palindrome (858596695858).

The spelling of 312154244645 in words is "three hundred twelve billion, one hundred fifty-four million, two hundred forty-four thousand, six hundred forty-five".