2311213154 has 4 divisors (see below), whose sum is σ = 3466819734. Its totient is φ = 1155606576.

The previous prime is 2311213147. The next prime is 2311213169. The reversal of 2311213154 is 4513121132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1465741225 + 845471929 = 38285^2 + 29077^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577803287 + ... + 577803290.

Almost surely, 2^2311213154 is an apocalyptic number.

2311213154 is a deficient number, since it is larger than the sum of its proper divisors (1155606580).

2311213154 is a wasteful number, since it uses less digits than its factorization.

2311213154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155606579.

The product of its digits is 720, while the sum is 23.

The square root of 2311213154 is about 48075.0783046684. The cubic root of 2311213154 is about 1322.1477802210.

Adding to 2311213154 its reverse (4513121132), we get a palindrome (6824334286).

The spelling of 2311213154 in words is "two billion, three hundred eleven million, two hundred thirteen thousand, one hundred fifty-four".