3151400981 has 2 divisors, whose sum is σ = 3151400982. Its totient is φ = 3151400980.

The previous prime is 3151400977. The next prime is 3151401013. The reversal of 3151400981 is 1890041513.

3151400981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (3151401013) can be obtained adding 3151400981 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2127976900 + 1023424081 = 46130^2 + 31991^2 .

It is a cyclic number.

It is not a de Polignac number, because 3151400981 - 2² = 3151400977 is a prime.

It is a super-2 number, since 2×3151400981² = 19862656286095524722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3151400921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1575700490 + 1575700491.

It is an arithmetic number, because the mean of its divisors is an integer number (1575700491).

Almost surely, 2^3151400981 is an apocalyptic number.

It is an amenable number.

3151400981 is a deficient number, since it is larger than the sum of its proper divisors (1).

3151400981 is an equidigital number, since it uses as much as digits as its factorization.

3151400981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 3151400981 is about 56137.3403449077. The cubic root of 3151400981 is about 1466.1144987987.

The spelling of 3151400981 in words is "three billion, one hundred fifty-one million, four hundred thousand, nine hundred eighty-one".