1310040981 has 12 divisors (see below), whose sum is σ = 1943424652. Its totient is φ = 849756096.

The previous prime is 1310040971. The next prime is 1310040989. The reversal of 1310040981 is 1890400131.

It can be written as a sum of positive squares in 2 ways, for example, as 1001722500 + 308318481 = 31650^2 + 17559^2 .

It is not a de Polignac number, because 1310040981 - 2⁹ = 1310040469 is a prime.

It is a super-2 number, since 2×1310040981² = 3432414743798884722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310040989) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1966696 + ... + 1967361.

Almost surely, 2^1310040981 is an apocalyptic number.

It is an amenable number.

1310040981 is a deficient number, since it is larger than the sum of its proper divisors (633383671).

1310040981 is a wasteful number, since it uses less digits than its factorization.

1310040981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3934100 (or 3934097 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 1310040981 is about 36194.4882682433. The cubic root of 1310040981 is about 1094.1955911076.

The spelling of 1310040981 in words is "one billion, three hundred ten million, forty thousand, nine hundred eighty-one".