2131358771428 has 6 divisors (see below), whose sum is σ = 3729877850006. Its totient is φ = 1065679385712.

The previous prime is 2131358771419. The next prime is 2131358771441. The reversal of 2131358771428 is 8241778531312.

It can be written as a sum of positive squares in only one way, i.e., 1876658887744 + 254699883684 = 1369912^2 + 504678^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 266419846425 + ... + 266419846432.

Almost surely, 2^{2131358771428} is an apocalyptic number.

It is an amenable number.

2131358771428 is a deficient number, since it is larger than the sum of its proper divisors (1598519078578).

2131358771428 is a wasteful number, since it uses less digits than its factorization.

2131358771428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532839692861 (or 532839692859 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 52.

The spelling of 2131358771428 in words is "two trillion, one hundred thirty-one billion, three hundred fifty-eight million, seven hundred seventy-one thousand, four hundred twenty-eight".