1211310982 has 16 divisors (see below), whose sum is σ = 2091693600. Its totient is φ = 515343168.

The previous prime is 1211310967. The next prime is 1211311001. The reversal of 1211310982 is 2890131121.

It is a super-2 number, since 2×1211310982² = 2934548590227608648, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1211310982.

It is a congruent number.

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, 313857 + ... + 317692.

It is an arithmetic number, because the mean of its divisors is an integer number (130730850).

Almost surely, 2^1211310982 is an apocalyptic number.

1211310982 is a deficient number, since it is larger than the sum of its proper divisors (880382618).

1211310982 is a wasteful number, since it uses less digits than its factorization.

1211310982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631695.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 1211310982 is about 34803.8932017670. The cubic root of 1211310982 is about 1065.9869423123.

The spelling of 1211310982 in words is "one billion, two hundred eleven million, three hundred ten thousand, nine hundred eighty-two".